First time chick mom! Hens or Roos 4-5 weeks old

[Brklyn]

Do I have hens or Roos? We got 6 chicks from Farm & Home they were all supposed to be hens and my kids hatched 2 with their homeschool group. Can anyone tell me what the yellow one with feathers on its feet is. We are supposed to have 2 Plymouth Rocks, 2 Sapphire Gems and 2 RIR but only one is, 2 we think are barred rock family that the kids hatched.

They are all around 4-5 weeks.

 

[Rhodebar Lover]

1-Buff Brahma
2-Cuckoo Marans or Barred Rock. Need clear pictures to discern leg color
3-Production Red
4-Barred Rock
5-Barred Rock
6-likely Sapphire Gem
7-Olive Egger
8-could be Sapphire Gem but I suspect Production Blue or another blue breed or mix. Its comb looks suspiciously like a cockerel's right now and since a Sapphire Gem cockerel is barred, it couldn't be the mix unless its a fast maturing pullet

 

[TheCluckyClucker2]

What did they end out being?