I just gave an example. Of course Y is the highest class. Then afaik K, B, H, Q, and some other classes.
The case with the Elite Bonus is normally in most carriers FFP. Even with Swiss Travel Club you only earn Club miles when flying Swiss Intl. Airlines. Same goes for Skywards, only when flying UL
but not other members. So I doubt that MH
would change that if they would go for Skyteam.