I mean pretty much anything you can CC and be good about doing lol. The problems begin to arise when you try to CC punish anything you shouldn't(like spaced Fair/Bair).
Tilts are best to CC punish, but jabs, Dsmashes, Fsmashes(particularly the first hit of it which happens more than you think due to quick attempts to Ftilt), Nairs, Dairs sometimes(if they don't knock you over) can be punished on CC fairly often as well.
So you can see Sheik isn't super safe on a well timed CC punish but you have to put yourself in those favorable positions(not spaced more importantly) to take advantage.
I'd play Sheik on you. =)