Artist: Kyousaku
From Mygrimoire. The characters below are based on the 72 Ars Goetia demons from "Lesser Key of Solomon" or "Clavicula Salomonis Regis", which is an extremely popular and anonymous grimoire from the 17th century, focusing on demonology.
Below is the list of all demons in order, including each one's respective hierarchy class.
1. Baal - King
2. Agares - Duke
3. Vassago - Prince
4. Gamygyn - Marquis
5. Marbas - President
6. Valefor - Duke
7. Amon - Marquis
8. Barbatos - Count and Duke
9. Paimon - King
10. Buer - President
11. Gusion - Duke
12. Sitri - King
13. Beleth - King
14. Leraije - Marquis
15. Eligor - Duke
16. Zepar - Duke
17. Botis - President & Earl
18. Bathim - Duke
19. Sallos - Duke
20. Purson - King
21. Morax - Earl & President
22. Ipos - Earl & Prince
23. Aini - Duke
24. Naberius - Marquis
25. Glasyalabolas - President
26. Bune - Duke
27. Ronobe - Marquis & Earl
28. Berith - Duke
29. Astaroth - Duke
30. Forneus - Marquis
31. Foras - President
32. Asmoday - King
33. Gaap - President & Prince
34. Furfur - Earl
35. Marchosias - Marquis
36. Stolas - Prince
37. Phenex - Marquis
38. Halphas - Earl
39. Malphas - President
40. Raum - Earl
41. Focalor - Duke
42. Sabnack - Marquis
43. Vepar - Duke
44. Shax - Marquis
45. Vine - King
46. Bifrons - Earl
47. Vual - Duke
48. Haagenti - President
49. Crocell - Duke
50. Furcas - Duke
51. Balam - King
52. Allocen - Duke
53. Caim - President
54. Murmur - Duke & Earl
55. Orobas - Prince
56. Gomory - Duke
57. Ose - President
58. Amy - President
59. Oriax - Marquis
60. Vapula - Duke
61. Zagan - King & President
62. Valac - President
63. Andras - Marquis
64. Flauros - Duke
65. Andrealphus - Marquis
66. Cimeries - Marquis
67. Amduscias - Duke
68. Belial - King
69. Decarabia - Marquis
70. Seir - Prince
71. Dantalian - Duke
72. Andromalius - Duke & Earl