I always enjoy your fry threads because watching the progress is as educational as entertaining.
Our spawning from last year produced some utsuri fry with the same blue/grey submerged look you've got there, and culling for us was pretty much a crapshoot guessing game (rookies donchaknow

). We kept a variety of different "looks" just to see what would become of them as they grew.
Most are mutts, some have turned out fair, but a few hold promise, but then again we weren't starting out with the kind of parent stock you are either.
Just guessing based on our very limited home ovservation you've got several with real promise, just such a long slog of close observation and carefull culling ahead.