I think is safe to assume WWE is the one stopping 2K from making all those myRise alternate versions playable. I don't know why people are shitting on 2k, obviously it would be super easy to make them available as alternate attires, but there must be a reason for that. All of those guys changed gimmicks (King Corbin to Happy Corbin, Dijakovic to T-Bar, normal Alexa to crazy Alexa) so I think WWE may want you to forget they played other characters in the past but it was too late to remove them from that game mode. I know Mia Yim appears twice, but probably they don't care as she's not in the company anymore