Galactic Grunt (female) -> TMS_Galactic_Grunt_f.png
Pokéfan (male; DPPt) -> TMS_Pokéfan_D_m.png
Ace Trainer (male; HGSS) -> TMS_Ace_Trainer_H_m.png
Koga (HGSS) -> TMS_Koga_H.png
Looker -> TMS_Looker.png
You'll notice that I'm using the same letters we use for the sprites, but in capital to distinguish from Gender. Also, TrainerMiniSprite was getting a bit long, so I shortened it to TMS.
EDIT: This is all the sprites we currently have. Perhaps "ani" could be attached to the name of the animated ones?