What type of Bantam might this be?

[Brahma Chicken5000]

Silkie mix.

 

[sourland]

If I were a 'guesser', I would guess silky/rosecomb cross.

 

[MROO]

Thank you, do you think the comb is supposed to be that shape?

If you're asking if it looks like he has bad frostbite damage, I don't think so. At this point in his healing, frostbite would generally look like a dark black spot. My daughter likens it to the black crust of a burnt campfire marshmallow. That's a bit unconventional and more than a little unappetizing, but it fits with what little we've experienced. Your boy's comb looks like a rose comb that has been "smoothed out" a bit by crossing with a Silkie walnut comb - which follows along with the general consensus here that he's a rose comb/Silkie cross.
And I concur with @drumstick diva - he's adorable!