I have no idea "what" they are but I wouldn't worry about the naked ones I'm sure they will grow into their skin lol but they are definately hairless meeces, who told you they couldn't be??
I have a naked rat and he has whiskers
and when he was small he also looked like his skin was too big for him, but he has indeed grown into it :lol: he's still a bit baggy though!!
I have a naked rat and he has whiskers