More info I gleaned from this copy of Wizard. I have no idea if this is a spoiler as there's no indication if this is just from a list Marvel gave out or it's going to be the subject of a comic one day but I'll give some space regardless.
Depowered Alpha related mutants so far:
Flex
Ghost Girl
Jade Dragon
Mesmero
Murmur
Radius
Wildchild
Windshear