if i had to group these 5 pages of avatars they would fall under
nonhuman- this would classify the animals, non human species avatars
gothic humans- alot of these avatars are gothic in appearance, making these avatars unique to themselves.
2D /cartoons-there are some avatars that are cartoony, 2 demensional that lack alot of detail as compared to the other ones.
normal male- these are male avatars that are normal in appearance
normal female- these are female avatars that are normal in appearance