Okay, here are the rankings (Going by point system now)-

Rookie - Starting
Ally - 10
Animal (The animal demon you have) - 30
Half Demon - 65
Demon - 80
Biju - 100
Biju Sibling (Only for the siblings of biju ex. Misa, Kai, and Chiyoko currently) - 100
Legendary 9 Member (Only for members of the legendary 9) - 120
Biju King (Only for Kyuubi though) - Unavailable

Current Promos (Added to points above)-

Suki - 15 points (3 artworks)
Hachimata - 5 points (1 artwork)
Raijuu - 20 points (4 artworks)
Yurikami - 10 points (2 artworks)
Houkou - 15 points (3 artworks)

Please tell me if I make any mistakes.
~Kyuubi