Seven weeks old - Gender guesses? Hatchery Surprise chick order

[flockmomma]

I thought they might be, but with all the EEs not looking like obvious boys right now, and what I think are three BO pullets, I didn't want to push my luck on that one.

I am mostly puzzling over the LBrahmas and the Polish now. Two of the Brahmas have a more prominent ridge to their combs, though still three rows, whereas the other one has a flatter comb.