Humans
Three categories: Warrior, Mage, Combat Mage
Eight Levels: Apprentice, Jade, Earth, Sky, Origin, Saint, Ethereal, Immortal
Four Sub-Levels: Early, Mid, Late, Peak
Demons
(Can't practice magic, only demonic arts)
Practice the same as humans for first four levels
Eight Realms: Apprentice, Jade, Earth, Sky, Incubus, Carnal, Demon Lord, Demon King
Four Sub-Levels: Early, Mid, Late, Peak
Beasts (In relation to combat mage levels) Eg. Early Level 1 = Early Apprentice but Peak Level 1 = Early Jade.Divine Beasts don't follow this and are much stronger than prescribed levels.
Level 1 - Apprentice - Early Jade
Level 2 - Mid Jade - Late Earth
Level 3 - Sky - Early Origin
Level 4 - Mid Origin - Late Saint
Level 5 - Ethereal
Level 6 - Immortal