The lil guy with the whiter face and white wings looks like a Royal Purple (so a couple of the Pearl Grey adults in your flock are carrying hidden-recessive partially pearled gene in their background).
Yes, the first little guy is a Royal Purple. Notice the irregular stripes on the head where Pearls have bold stripes on their heads. Here is a picture of 5 Royal Purples that I hatched out last year. They are very pretty as adults and very cute as keets.