Newbie and wondering what breeds we have

[rnd6394]

We are first time chick owners. They are 6 weeks old now, but at 3 weeks, we got 8 dark brown, 8 tan, and 1 white egg layers. Not sure what breed they are. Also, we think the dark brown with the red comb is a rooster, and our white one is rooster, but we aren't sure. Input appreciated. Thank you!!
Blessings!

 

[Mountain Peeps]

The red ones are RIRs and the white one is either a white rock or leghorn. (Not sure about the others.) The red one with the large, red comb is a boy. The rest appear to be females.