I'd guess the one outside in the first picture is male, and the one walking out of the coop is female. I'm judging by combs and depth of color in the shoulder area. I could easily be wrong, though.
The rest of them aren't as clear. I'd guess the birds in picture 7 and 8 are females.
By red Colombian I just meant he has the Colombian pattern but with red instead of buff or white. Could he be an olive egger instead of a Brahma? Or maybe there was a mistake in one of the breeding pens? I am not seeing red Brahmas offered by any hatchery.
It appears to be red Colombian. They legs are pinkish white instead of yellow, as Brahmas are supposed to have. I'm not sure what is going on with this bird. Do you know the hatchery?
I see a bunch of production type Rhode Island reds. Some are lighter, some are darker.
I see a buff Brahma in the first three pictures, and the very last one.
Next to it, either a black sex link or black copper Marans.
There is a Colombian Wyandotte in the twelfth picture.
There is a...
Feather quality varies. Some have softer feathers, some have harder feathers. A breed like Cochin or Orpington is known for softer feathers, but it can occur in most regular breeds.
Your barred girls may have cuckoo Marans rather than barred rock genes. They do appear mixed to me, though. The...