At that age, I'd be saying the first two are pullets but you should definitely know by 6 weeks.5 weeks now! The only one I’m really stumped on is Pinky (pink band). Comb growth is much slower compared to Bluey and Blacky and closer in colour to white bands.
Have compared in pics below with shots of feathering/lacing.
Pics 1-3 “Pinky”
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Pics 4-5 Pumpkin (white band)
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Pic 6-7 “Bluey”
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