I have 9 chicks that are about 5 weeks old. I am trying to figure out possible breeds and genders, but they make it very hard to get a decent picture...
It would be a little easier if you numbered them but I'll try.
Looks like your two black and white Barred ones are cockerels. The lighter one looks like a Plymouth Barred Rock. The darker one may be a mix (Olive Egger possibly).
The 2 Buff colored ones appear to be pullets
There's a dark head one with a patterned body that looks like it has a pea comb. I think that's an Easter Egger (another mix). Pictures aren't good enough to tell gender.
Just need better photos for more guesses. Preferable photos of the individual birds in better lighting.