Generally;
FitCharacter.pac -moveset
FitCharacter00.pac/pcs -Original texture
FitCharacter01.pac/pcs -Red texture
FitCharacter02.pac/pcs -green texture
FitCharacter03.pac/pcs -blue texture
FitCharacterMotionetc.pac -animations
this, especially the textures due to what color the original is, can vary, so below is a complete list.
Sonic: sonic
FitSonic.pac [moveset}
FitSonic00.pac/pcs [original}
FitSonic01.pac/pcs [red}
FitSonic02.pac/pcs [green}
FitSonic04.pac/pcs [gold}
FitSonic05.pac/pcs [black}
FitSonicFinal.pac [final smash}
FitSonicMotionEtc.pac [animations}
FitSonicResult.pac [results screen}
Reading is fun!