Silkie sex help.

[Ladybird CA]

I would love to add to this thread and ask about my silkie chicks. They were hatched 3/10/19 sothey are 6 weeks old. I’m pretty sure the white one is a pulley, but the other two...need your help!thanks for your help.

The grey/cuckoo one looks like a cockerel, don't know about the others.