Adam Moon - Probably wouldn't really know him, but would be game for random interactions all the same
Daphne Greengrass - Being that they were on the same Pureblooded circuit growing up, it is likely she would know him. I think she would probably like having someone like Michael as a friend, as he isn't up his own ass.
Jack Sloper - Depends on if Michael is a drinker or not, but might know him in passing.
Katie Bell - As they were both in the DA, Katie will remember Michael very well. I'd probably say they were friends?
Keira Bundy - Again as she was older, she probably wouldn't know him, but would be friendly if they were to meet.
Mandy Brocklehurst - Is super super glad to have her BFF in the game <3
Sera Fawcett - Same house as Michael and only a year below him, so friends?
Zach Smith - Same story as Sera, so again, maybe friends?