Sorry for the delay in response, I’m on and off the site randomly these days. Have to agree with
@LynnaePB that their appearance can change within a matter of weeks from looking quite feminine to looking obviously male. I’ve had several that have done this to me!

Even recently sold a bird to a customer as a female and had to buy “her” back a few weeks later when it was obviously a boy.
Agree that even at 12 weeks it can be difficult to tell but around 15 weeks it becomes more obvious.
It can be a bit easier to tell with the Satins, which you have many beautiful examples of, as their saddle feathers will start to come in at around 12 to 13 weeks. These are difficult to see in the silkied feathered birds.
Out of the photos you have posted I really do not see any obvious boys yet.
Well bred, breeder quality, super fluffy bearded birds are slow to mature.
Kumori went from this at 12 weeks:
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To this at 15 weeks:
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