I disagree with Yoshi, JigglyPuff, ROB
And Falco. The first 3 can all super plank us on this stage, and Falco can go to town phantasming away from us with the top platforms. If he gets the lead, he's going to time us out hard, not to mention the tiny platforms make it really easy to tech chase us up to 80% off of one grab, if he stays on the bottom platform our u-Smash isn't going to kill him out of f-tilt lock, and he has 6 safe options for recovery(Top ledge, Top platform, Middle Ledge, Middle platform, bottom ledge, bottom platform.) making it near impossible for us to gimp him. He can also camp the bottom with bair, and when we're above Falco we have little say in the matter.
Personally I wouldn't take D3 here either, for one of the same reason as Falco. He can tech chase his d-throw incredibly well here, and can hard bair camp the bottom once he has the lead. And killing him became much much harder unless you can somehow force him onto the top platform.
JigglyPuff is like a mini Metaknight on this stage, there's so much air that it's near impossible for us to challenge him.
Pretty much the same with Yoshi, platforms give him an escape, we can't florr trap him and from the middle platforms(in height) he can egg camp us hard.
RoB once again can hard plank us here though I don't feel it's that bad of a MU here I heavily disagree with it being a cp.
The same applies to Link and Captain Falcon. This is actually one of their best stages, Link can recover here, and can zair camp the hell out of the bottom platform, and projectile camp the top/middle ones. Captain Falcon platform traps us a hell lot better than we platform trap him.
The rest of these I don't feel like have anything to do with Sheik being good on this stage, it's more they were bad here to begin with.