Actually, I'm still a bit hazy on the exact amount of categories, if someone could direct me or post a conclusive list, that'd help me out greatly.
Currently these are what the game "Loads".. that does not mean it is showing them yet. But most will be showing some after the next patch.
Anal, BDSM, Sex, Beast, Group, Les, Preg, Death, Profile, Combat, Oral, Ecchi, Strip, Maid, Sing, Wait, Card, Bunny, Nude, Mast, Titty, PregAnal, PregBDSM, PregSex, pregbeast, preggroup, pregles
There is definetly a bug with preg pictures, in that the very first one (Preg) is going to end up picking up ALL of the preg pictures due to a bad wild card usage. I have not worked on a fix yet. but it is on my to do list.