How funny! They're stinkin' adorable either way 😍. The b.rock in my last pick is the "runt", but the other BR wings aren't too much more developed than that one.
I have 4 BR that are 1 week old today, and I'm very anxious about their status - I've been checking the wings for more white too, lol. Yours have much bigger wings than mine. My buff orps (same age) have MUCH more wing feathering.