They have some chunky combs, but the closer image shows that they're not as large as they appeared to be from the top. (This is why multiple angles are sometimes needed for clarity and why for a gender ID - we need them from the side)
I also think I do see yellow in the sole of the foot which...
The BRs appear to be CMs. I'm almost willing to bet they're all cockerels except for the one you circled.
Can we get pics of the other chicks that aren't barred?