I would say he is a snowcap, since they are usually born with that perfect shock of white on their butts. I wouldn't call him a snowcap with spots, as I think the white will expand a bit over his rump, so better to call him a snowcap at this point. Most appy breeders want either a snowcap or a fewspot, since both are homozygous for the appy genes and throw appy on any foals they produce. They do have tests for the LP gene and the PATN gene, and you might want to test him for them to prove what he's carrying. Nothing better than LP/LP PATN/PATN. These are the ones you can breed to solid mares and produce some loud color babies.
He's just a little beauty!! Precious and Legacy did you proud!!
Momma and baby resting quietly....