If you read the paragraph on the Critic/Alluring Rider. They actually mention she's uncensored in the Anthology release (unless you or someone recent just edited it but it doesn't look to be the case) they just happen to still be using the SNES picture for some unknown reason.

The Leo issue comes mostly from the picture of his Chibi artwork as has been pointed out. Whether he's actually the first black character is up in the air imo, but the chibi artwork is convincing and his normal picture gives him darker skin tone than everyone else in the cast who is pale white, it is not far fetched to believe he not Caucasian.