I decided to go down the rabbit hole of some old manuscripts which were supposed to contain lists to see if there were any demons out there that did not make it into the Ars Goetia which is so well known. The sources I used were the German Liber Incantationum, the Italian Fasciculus Rerum Geomanticarum, the French Livre des Esperitz, the Pseudomonarchia Daemonum, and the English version of the Liber Officiorum Spirituum found in the Sloane Manuscripts. There certainly were, and I learned some other interesting things along the way.

• AVEDIE, AVEDJE, ABECH, EBEYETH, ELYETH or ABETH is a great King of the South. He appears as a bodiless head crowned with a diadem. Two ministers with trumpets proceed before him. He teaches all logic, rhetoric, sciences, and languages. He gives excellent familiars. He also can get friendship. He gives true answers about the past, present, future, the arts, things secretly enchanted (or consecrated), secrets, and of the Fall and how the demons fell, but he is never truthful when outside of angled figures (such as the summoning triangle). He has 30 Legions (80 in other sources) of lesser spirits.
  
  
• BOAB or BOALL is a great president or Lord. He appears like a soldier with the head of a lion riding upon a black horse. He speaks with a hoarse voice and has fiery eyes and the teeth of an ox. He gives understanding of all natural things and even of the speech of animals. He moves silver and gold from place to place. He gives true answers about hidden things, the past, present, and the future. He has 40 (or 44) Legions.
  
  
• GORSON, GORSIN, GORSOR or GORSAY is a mighty Duke. He appears as a man with the head of a night raven or owl. His powers are to grant one the art of Pythian divination and to make one skillful in their occupation or tasks. He also can bring bandits and murderers to an appointed place, and he makes them suffer pain and torment if commanded. He has 12 (or 15) Legions and was of the Virtues before the Fall.
  
  
• YUDIFLIGES, JUDIFLIGES or IUDIFLIGES is a mighty Duke. He appears as a crow but can take human form. If ordered to, he can cause all who see him to hear a symphony of trumpets. He has every kind of instrument in his possession and can teach the conjurer how to play them. He is a good servant with 19 Legions.
  
  
• SAILMON, SAYLMON or ZAMON is a mighty Duke. He appears as a lion-headed man on a pale horse. He has an eagle on his arm and speaks in a harsh voice. His known power is to make peace among quarreling men and women. He controls 30 Legions.
  
  
• LANIMA or PRUUNAS is a great Count. He appears in the guise of an angel and speaks in an agreeable manner. He knows all the powers of herbs and can teach them to the conjurer. He has 20 Legions.
  
  
• RAS is a great Lord. He appears as a deer but may take a human form which speaks in a grave manner. He has the power to make beasts weak or lame. He grants goodwill from friends. He rules 69 Legions.
  
  
• TORCHA is a strong Duke. He appears as a griffon but may take a human form which speaks duplicitously in a harsh voice. He is able to control all flying and winged creatures and can grant noble titles and their confirmations. He may also be used in a ritual of image magic wherein a metal bird is fashioned for the conjurer and consecrated by the demon. This magic item, once placed, will gather to it all birds in the vicinity and they will sing and will be utterly tame even allowing themselves to be captured. The conjurer may then use the idol to control them how he wills. He surely has Legions, but the number is lost.
  
  
• ARA is a Duke. He appears as a dragon but may take human form. He can summon forth serpents to his position and control them. He may also be used in a ritual of image magic wherein a metal serpent is fashioned for the conjurer and consecrated by the demon. This magic item, once placed, will ward off all serpents from its vicinity. If the image is ever broken the enchantment will be lost, but it is otherwise permanent. He can additionally answer questions about the past, present, and future. He has 25 Legions.
  
  
• ACAR is a great Count. He appears as a cicada or cricket but may take a human form with a harsh voice. He gives true answers of the past, present, and future. He may also bestow love between men and women. He is said to be the prince of flies, locusts, and similar insects and may thus control them. He may be used in a ritual of image magic wherein a metal talisman is fashioned and consecrated by the demon. This talisman may be made either to ward away when placed; attract when placed; or control cicadas, flies, locusts and other such insects. He has 20 Legions.
  
  
• PARAGALLA is a great Marquis. He appears as a lion-headed soldier on a horse of flame. He has the power to control birds and beasts. He may also be used in a ritual of image magic wherein a metal figure of the magister as a soldier holding a sharp sword is fashioned and then empowered by the demon. This image has a strong curse and may be placed in the household of a king or of people with whom the magister quarrels or between a husband and wife. Its curse is to bring about the wounding, or even killing, by sword or dagger of the one the magister names as his foe. He has 30 Legions.
  
  
• PONICARPO is a strong Duke. He appears as a Man-at-Arms. He grants the love of women and true answers to the conjurer's questions. He may also be used in a ritual of image magic wherein a metal figure of a man-at-arms holding a sharpened weapon is made and then empowered by the demon. The image's power is to bind infantry. He has 30 Legions.
  
  
• LAMBES, JAMBEX, IAMBEX is a great Marquis. He appears in the form of woman with a pleasant voice. He grants the favor of nobles and the love of men or women. He may also be used in a ritual of image magic wherein a large wax figure of the magister should be fashioned with "amor amore vincitur" inscribed on its brow and this consecrated by the demon. By the power of this talisman the magister may gain the favor of all people that he may not be opposed or he may inflame a man or woman to love and summon them to him. He has 15 (or 25) Legions.
  
  
• TRIPLEX, TRIBLEX, FRIBLEX, FRIPLEX or COMPLEX is a great Duke. He appears as a beautiful angel and is a humble and loyal servant to the conjurer. He holds power over animals and the favor of nobles. He is greater than the others involved in image magic and by his empowered talismans all flying creatures, beasts, serpents, and even basilisks and dragons may be bound to the user's will and kept in cages, pits, cisterns, etc. He may also be used in another ritual of image magic wherein a crown of gold is fashioned and empowered by him. By this talisman, the conjurer will have the favor of a noble and even kings and may be established in a court or royal chamber. He has 43 Legions and was of the order of Principalities before the Fall.
  
  
• TAOB, HOABB, HOOAB, GOATHE or COAP is a great Prince. He appears as a black bird or as a man arrayed as a physician. He is a most excellent physician and knower of medicine for women. He has the power to grant the love of women, summon them to the conjurer, make them submissive, and may change their form that they may more easily come together with a lover when commanded (How Arthurian). He can also make women infertile. This spirit in Latin resembles both Gaap and Zepar/Globa, perhaps they derived from him via textual corruption. He has 25 Legions.
  
  
• TVUERIES, TUVERIES or SOWRGES is a great Marquis. He appears as a knight on a three-headed black horse, being those of a bird, horse, and fish, and has dominion in the realm of Africa. He teaches grammar, logic, rhetoric, and theology. He reveals hidden treasures and other secrets. He can cause journeys by water or on horseback to pass quickly and safely. He similarly can protect those crossing rivers. He is most probably the spirit which Cimeries developed from. He has 30 Legions.
  
  
• SUCAX, SUCHAY, DUCAY, LUCAY or FEWRAYN is a great Marquis of the West. He appears as a benevolent man with a fair woman's face. He gives the love of women, especially of widows; the understanding of all languages; and carries one swiftly from one place to another. He has 23 Legions.
  
  
• PRUFLAS, SUFFALES, BULFAS or BUFAS is a great Prince of the East. He appears as a flame of fire, but with the head of a night raven. He is said to haunt the area around the Tower of Babylon or where it was. He can cause discord, war, quarrels, and promotes falsehood. He will willingly serve, but lies in his speech unless he is properly bound. He has 26 Legions.
  
  
• DIUSION or DICISION is a great King. He appears as a handsome man. He gives true answers to the conjurer and reveals hidden treasures in the earth. He has 24 Legions.
  
  
• CARMOLA is a great Prince. He gives the understanding of the language of birds and can reveal thieves and murderers if commanded. He can also make the conjurer invisible and will answer any questions honestly. He has 26 Legions.
  
  
• LUCUBAR is a great Duke. He makes men cunning and skilled. He may also transform lead into gold and tin into silver.
  
  
• BITUR is a great Marquis. He appears as a handsome young man. He gives the love of women and destroys cities and castles if commanded. He may also cause one to lose a noble title or honor. This spirit's name is oddly similar to Bitru but his powers are more similar to Raum's. He has 36 Legions.
  
  
• DAM or JAYN is a grand Count. He appears as a handsome man. He brings gold, silver, or anything requested to the conjurer. He may cause an enemy of the conjurer to be weakened or even killed through disease. He also knows all the secrets of women and can cause them to strip and dance naked. This last power is the same as Bitru. He has 25 Legions.
  
  
• DISTOLAS is a great marquis. He appears as a handsome man. He is a willing servant. He can bring stone from any place desired and can give the conjurer an enchanted horse (likely a demon) which can bring the conjurer to any place he desires in the world within an hour. His name is suspiciously close to Stolas, but his powers differ entirely. He has 20 Legions.
  
  
• PARCAS is a great Prince. He appears as a handsome man. He knows the virtues of herbs and stones and can bring them to the conjurer if commanded. He makes men invisible, cures blindness, teaches all sciences, makes men young or old depending on the command, reveals hidden treasure, and brings whatever the conjurer desires. He may also carry the conjurer and other persons wherever the conjurer wishes in the world. He has 30 Legions. This spirit is just a very embellished FORAS from the Goetia found in a French manuscript, but it is worthy of note nonetheless.
  
  
• BEALPHARES, BEALPHARE or BEALPEARE is a spirit of the East (or North?). He appears as a beautiful man or woman. He is an excellent carrier of items or persons from place to place and gives true answers to the conjurer. He reveals hidden treasures in the earth and things lost or stolen. It might be that this spirit is the BEALPHEGORE or FEGOR mentioned to have been present in the grimoires according to Michael Scot. If this is so, he was once bound in the service of certain Roman priests in the image of an owl. On the other hand, it could be Saer, who has nearly the same description, or an unrelated demon altogether.
  
  
• NEOPHON or NEOPHEYN is a Lord of the East. He appears as a dog. He knows of the past, present, future, and all secrets. He gives the favor of nobles, noble titles, wealth, and calms discord.
  
  
• BUSIN, RUSYN or REWSYN is a Duke of the South. He appears as a beautiful woman with a hoarse voice. He can bring corpses from one place to another and send one spirit of his legions into a corpse and have it move, speak, follow commands, and do all that the living may do, except eat. He knows of the past, present, and future. He has 10 Legions.
  
  
• GORDOSAR, GORDONSOR, or GORDONIZER is a [Duke?] and President of the West. He appears as a holy angel but with a dark face. He is a powerful servant. He can truly answer questions regarding all things. The rest of his powers are written as "etc." and likely lost to time.
  
  
• BATATH or BALATH is a [Duke?] and President of the West. He appears as a misshapen figure with a hoarse voice. His powers are to make a healthy man sick or to deprive him of his senses (hearing, vision, etc.) or sanity. He also gives love, noble honors, and knowledge of the 7 liberal sciences and can carry the conjurer from one place to another.
  
  
• LAYME or ZAYME is a Count of the West. He appears as a raven. He may be sent out by the conjurer to bring money from wherever he may find it or a declared place and carry it wherever the conjurer appoints. He can show the conjurer the construction or current situation of any plot, town, or castle. He also grants noble titles.
  
  
• OZIA is a King of the North. He appears as an  old man riding an elephant. He can teach all arts and sciences. He grants invisibility and the favor of the one's enemies. He may also instantly carry one from place to place.
  
  
• VRIELL, VRIALL, or URIALL is a King of the North. He appears as a boisterous king with a hoarse voice. He grants invisibility and can transmute substances into others: iron or brass into gold and silver, wine to water, water to wine, and fools into wise men.
  
  
• SYNORYELL, SYEONELL, LYEONEL, LOONEX or SOONEK is a great Count of the North. He appears as a fierce bear or as a man or boy. He can answer all the conjurer's questions of things past or future, teach all the languages of men and of the beasts and birds, and reveals hidden treasures. He has 18 Legions.
  
  
• TESSEN or FESSAN is a [Prince?] of the North. He appears as a flame of fire with a hoarse voice. He teaches astronomy and mathematics. He gives true answers to all questions.
  
  
• GOYLE or MOYLE is a great Marquis of the North. He appears as a fierce lion with a griffin's wings or as a man. He can makes the conjurer beautiful and excites the heart to joy. He teaches all sciences and feats of arms and grants victory over enemies and the favor of nobles. He gives true answers to all questions. He has 13 Legions.
  
  
• AURAS is a Lord of the North. He appears as a wild ape or as a wild ass. His power is to carry corpses to whatever place the conjurer appoints. He gives answers to all questions.
  
  
• OTHEY is a Lord of the North. He appears as a cask of wine or a man with fiery, burning eyes. His power is to instantly create castles, towers, and towns. He truthfully answers questions.
  
  
• SARANYT is a Lord of the North. He appears as an ass with a woman's face. His power is to raise the shades of the dead that they may speak with the conjurer. He can also teach the 7 arts and liberal sciences.
  
  
• MURYELL is a Lord of the North. He appears as a white lion. He can inflame love between persons and reveal hidden treasures.
  
  
• UMBRA or HINBRA is a Lord of the North. He appears as a giant with a quiet voice which is near unnoticeable. He gives noble titles, friendship, and can move money from place to place when commanded. 
  
  
• ANNOBOTH, ANNOBATH, ANNABATH or ANABOTH is a Lord of the North. He appears as an armed knight on a pale horse with a double crown upon his helm and holding a lance. He teaches all sorceries, necromancies, chiromancies and other magics and reveals hidden treasures and tells if it enchanted or guarded. If the guardian is a demon of the North, he will banish it for the conjurer. He can tell the conjurer of wonderous and strange things if the conjurer asks. He has 18 Legions.
  
  
• TAMON is a great King. He appears as a goat. He reveals hidden treasures in the earth, and where precious stones are, and where to find various minerals and hidden money. He speaks foul and evil-favored without any discretion unless constrained not to. He has 50 Legions.
  
  
• DRUCHALL or DREWCHALL is a great King. He appears like a great horned stag. His power is to win castles or gold and he can cast those that guard them into a deep sleep. He may also make the field appear to be full of an army of harnessed soldiers. He has 36 Legions.
  
  
• KUBO, KOBO, KEWBO, ROBO, RUBO or CAAP is a great Prince. He appears as an armed knight, sometimes with a lion's head, on a black horse. His power is to bring gold and silver from wherever commanded and generally grant wealth. He gives true answers to the conjurer's questions. He has 20 (or 29 or 40) Legions.
  
  
• LEWTEFFAR, FALCAS or ABARAK is a great Prince. He appears as a diabolical monster with a hoarse voice riding upon a fire-breathing dragon: He has starry eyes, a head like a typical medieval devil crowned with a rainbow with a third eye in his forehead, a viper tail, hands like a bear, and feet like a mole. His breath exudes a sulfurous stench and he can breath fire. He speaks plainly but is a great liar and will attempt to trick the conjurer into believing he has summoned one of the 4 Kings of the cardinal points. He is desirous of sacrifice, loves music, and will tempt men and especially women into vanity and pride. He will at first behave confidently and be laughing, then become angered, and then desperate as the rituals of binding proceed. He may only be summoned in the 7th hour and may never cross over running water. He teaches astronomy, astrology, sorcery, geomancy, all liberal sciences, and he grants men the love of women, noble titles, promotions and their confirmations. He may also carry money or gold from anyplace to wherever the conjurer commands. He has 20 Legions.
  
  
• BARBARYES is a great Prince. He appears as an armed soldier holding a spear with a banner. He gets the conjurer the best of friends who would even stand with him against his enemies. He can cause a foe to lose his sight, hearing, or strength. He makes the conjurer wise and bold. His name sounds like either Barbas or Barbatos, but the description holds no similarity. He has 50 Legions.
  
  
• PORAX is a great and strong Prince. He appears as an angel yet black and very dark. His power is to build houses and various places, to divide lands, woods, and waters, to plant fruit trees and crops, to know the virtues of herbs, and to still waters. He has 9 Legions.
  
  
• AMADA is a Duke. He appears as a monstrous beast. He gives true answers of the past, present , and future. He has 42 Legions.
  
  
• GEYLL or GYELL is a great Count. He appears as an elephant or as a man with a hoarse voice in either form. He can control wild beasts and grant that control to the conjurer; can bring money or gold from any place ordered be it house, palace or otherwise and leave it where commanded; gives the best of familiars; and grants titles and confirms them. He has 50 (or 7) Legions.
  
  
• DEYDO or DEYOO is a great Count. He appears like a child. He makes trees to flourish and be green even out of season. He teaches all liberal and mathematical sciences as well as all languages. He has 414 Legions.
  
  
• ANSORYOR, ANSORIOR, ANTIOR or ANTYOR is a Lord. He appears as a warlike knight upon a pale ass with an eagle on his arm. He teaches medicine, necromancy, pyromancy, hydromancy, the virtues of herbs and stones, and the liberal arts. He can teach one the mastery of all those liberal arts in but 7 days. He gives true answers of the past, present, and future. He is desirous of sacrifices and will otherwise refuse to serve if not bound well. He is a good physician but is deceitful of nature. He has 20 Legions.
  
  
• BRYMAN, MYCIORON or MYCINIOROM is a great Count. He appears as a small goose. He teaches the virtues of herbs, stones, and flowers. He can teach one of all plants, fishes, birds, beasts, metals, and waters and of their properties. He can make one invisible and may also cause enemies to sleep continually unto death (unless dispelled). He is desirous of sacrifices. He has 30 Legions.
  
  
• GEMMOS is a strong Lord. He appears as a knight on a red horse with a strong voice. He teaches of the alchemical process by which lesser metals may be turned into gold, of herbs, of the Philosopher's Stone, of precious stones, of medicine, and of logic. He gives true answers about stolen goods. He was of the order of Archangels before the Fall and has 27 Legions. This spirit is suspiciously similar to Berith but lesser.
  
  
• NOOCAR is a noble Lord. He appears as an old man with a viper tail  and dirty hands and feet resting upon a staff with a voice like a screech owl. He is an obedient servant and will show things willingly but he will not speak truthfully unless compelled. He reveals normal treasures and treasures enchanted under the power of the 7 planets. He is an excellent teacher of necromancy, magic and of the best astrological times for such operations, of astronomy, astrology, and the virtue of herbs and stones. He always appears to be looking toward the heavens. He has 27 Legions.
  
  
• ARON, ARAN or ARAMBOS is a Lord. He appears as a man. He tells of the past, present, future, and of secret of hidden things. He grants the favor of friends and enemies, titles, promotions, and the confirmation of such through his deeds and words. He has 45 Legions.
  
  
• PAMELON or PAYNELON is a great Lord. He appears as a knight. He tells one of things in the water or earth and how to acquire them. He grants the love of maidens. He can compel other lesser spirits from the four cardinal directions to come to the conjurer. He gives true answers of all things. He has 10 (or 6) Legions.
  
  
• JOOREX or IOOREX is a great Lord. He appears as a stag with a small voice. He teaches how to make and play all manner of musical instruments and also astronomy. He can cause a man to win at all manner of games if bound into a ring and worn on the forefinger. He has 9 Legions.
  
  
• MAGEYNE is a Lord. He appears as hedgehog. He may serve the conjurer as a good and loyal familiar companion. He advises and helps a man in all manner of needful business, such as husbandry, farming, and the various occupations. He has 20 Legions.
  
  
• GASYAXE or GEENEX is a great Lord and Knight. He appears as a hare or a valiant serjeant-at-arms. He teaches the conjurer the art of binding demons into rings for answering questions; for winning games whether at dicing, card playing, bowling, or shooting; or for love. He also teaches how to make a scrying glass that one may see the truth and see whatever they may wish including things lost or stolen. He tells how one might force true answers from demons. If the conjurer binds him into the head of a dead man he will teach the arts of necromancy, magic, and all the sciences. He has 16 (or 20) Legions.
  
  
• BARTAX is a Lord. He appears like an old man. He reveals hidden treasure, who keeps it, and how it might be obtained. He has 4 Legions.
  
  
• LEBAN is a mighty Knight. He appears as a giant. He speedily carries persons and things wherever or from any place the conjurer wills. At the conjurer's command, he may even bring hills, mountains, castles, and all manner of riches wherever appointed. He has 40 Legions.
  
  
• DOODALL is a mighty Knight. He appears as a mounted knight with a spear of gold. He can call together lesser demons that he might form a council to remedy any unfortunate events that have happened against the conjurer though if he can advise one without a council he will do so. He has 6 Legions.
  
  
• CORNYX is a captain or serjeant-at-arms (a demon commoner?) and appears as a man arrayed as such. His power is to call together birds, to control them, and to bring them wherever desired. He has 7 Legions.
  
  
• MOSACUS is a common demon. He appears like a monstrous giant holding a crook and reaping sickle: he has the trunk of an elephant on his face, fiery eyes, the face of a dog on his right breast and the face of an ass on his left, faces like bloodhounds on his elbows and knees, a forked tail, eyes in his belly, and feet like a goose. He may also be requested to appear as a red-haired child. He will answer the conjurer's questions honestly. His power is to reveal hidden treasures.
  
  
• BIRTO is a common demon. He appears like a green wyvern or as a fair man, sometimes armed as a black knight. He can be made to truthfully answer the conjurer's questions about any and all matters and his office is to reveal hidden treasure. He was said to have been summoned at court for King Edward IV of England. He may only be summoned in the 2nd, 4th, 6th, 10th, or 12th day of the lunar month in clear weather.
  
  
• BARRON, BARAHAN, BARACHIN, BARO, BARYTH, BARAN or BARON is a mighty Prince. He appears like a monstrous satyr with a serpent's tongue or as a handsome young man. He can reveal hidden treasures, grant wealth, procure the love of maidens and bring them to the conjurer, cause discord, bring peace to strife, or bring anything desired to the conjurer. He is always desirous of sacrifice and will sometimes refuse to operate without an offering. He is perhaps most infamous for the attempted summoning involving Gilles de Rais.
  
  
• MAGOTH, MAGUTH, MAGOT or MAGOR is a great King. He brings whatever food, drink or books the conjurer may desire, grants invisibility, reveals thieves, transforms the conjurer into various (but still human) forms, detects magical effects, dispels magical effects, hinders the rites of other magicians, reveals hidden treasures, causes sudden music to be heard, and makes plays or great balls with dancers and all manner of minstrels to occur before the conjurer. Many spirits serve him.
  
  
• LUXURIOSUS, SUPERBUS and AVARUS are three succubus-like demons known to operate together. They take the form of maidens, sometimes with fiery, burning eyes. If conjured they will try to tempt or seduce the conjurer into a pact and are desirous of offerings. They can free one from bonds, fetters, and prisons and carry one from one place to another. They know the virtues of herbs and stones and how medicines or deadly poisons may be made from them. They can also create illusions such as a great many soldiers and deprive men of their senses (vision, hearing, etc.). They are also capable of building small structures such as bridges in one night.

There are some additional interesting facts to note. A Legion of demons is always a group of 6,666 according to both Michael Scot and Johann Weyer. I also learned from a footnote in one work that the hierarchy and Latin titles of demons in grimoires are parallel to that of the Carolingian Empire. In addition to familiar names like Aymon and Astaroth, Michael Scot briefly mentions a couple which seem to have been lost: MANDREC, MANDRAC, or MADRECH and GARGIFER or GURGIFFER. The spirits of the Goetia also differ in more ways than name when they showed up in the manuscripts, likely a result of textual corruption in later books. Any spirit appearing as a "strong man" was likely a bear originally. Crocodiles (ridden by spirits) may be instead cockatrices depending on the manuscript, a phenomenon also present in bestiaries. Forneus once appeared as a crowd of beings. Amon, Bune and Gamygyn all lost a power, the main one in the latter case, which is to call up the shades of the dead. Amon could do this for those that died in the sea and Gamygyn for those and also those that died in sin (Hell and Purgatory). Bune could do it for those in a cemetery or tomb. Bael could cause love. Amy or Avny could gain the favor of nobles. Vine could inflame lust between spouses (savior of marriages). Vassago lost most of his powers as a Prince when they were summed up as "etc." in later manuscripts:

• VASSAGO, VSAGOO, VZAGO, DYELAGOO or VASAGIO is a great Prince of the North. He appears as a beautiful angel or as a fair man. He is a trusty servant to the conjurer in all things. He makes one wise and invisible, transforms one into another shape, gives the love of women, reveals hidden treasures or lost items, and gives the favor of friends and foes. He gives true answers to questions even about the past or future. He has 26 Legions.

Edit: Attached is a doc with all the directional fealties, forms, and aliases I came across for the 72 spirits of the Ars Goetia.