Hmm, the first three you posted are actually the Creles. The first is definitely a pullet and third definitely a cockerel, but that middle one has me puzzled. Patterned more like a cockerel, but not much comb development like a pullet.

I'm honestly not sure on that one. I'd lean toward slower developing male just based on the feathering, but give that one more time to be sure. Hopefully I'm wrong.
The next two look like Black Breasted Reds, so I'm guessing that the ones I thought looked spangled were actually just BBRs with lighter bellies than I'm used to seeing on them. Weird! But you have a pair there, first female second male.
Crele, for the record, is the same pattern as Black Breasted Red but with the addition of the barring gene. So the males of both varieties at this age should have more black / gray coloring, especially down their fronts, while females should have brown on their fronts.
I'm feeling like that Cochin
has to be large fowl as big as he is... unless he's way older than the others, but he doesn't look that much older based on how much feathering he has. Weird that he was with the bantams!