Yes...it looks like a rose comb to me...which fits Dorking with the short legs..everything except skin color and toe count.
No...not Cornish (totally wrong body shape, head, etc.); not Sebright nor OEGB...too stocky...with games the wing tips generally fall below the body line and the head is more refined....or that could be camera angle...I've seen birds change significantly in appearance with a different photo angle. If those wings do drop below body line as the bird has more of a dove appearance, then yes, you might have some bantam games....but they usually have long legs.
My guess is hatchery quality Dorking or Dorking mix.
Best guess until someone else with more knowledge steps in.
Try to get profile shots...maybe that will help clear some things up.
LofMc