I believe you have 2 or 3 black sex link pullets. 2 of the buffs look like pullets, also. So at least you have some females. But there are a lot of males, too.
In the last picture, the buff is likely a cockerel. In the upper left corner of the photo, the red and black bird is a definite cockerel.
In the middle picture, I believe you have 2 black sex link pullets at left. The big buff at the back is very likely a cockerel. The buff on the right of the picture looks like a pullet. To the left of her is another buff cockerel, the one facing away from the camera. The buff at the lower left is probably a cockerel, but need better pictures of that bird to be sure.
In the top photo, the black bird at the upper left corner, emerging from the nest box, is a pullet. The buff bird in front of her doesn't have its comb in frame, so can't tell on that one. The large buff bird in the middle is a cockerel. The buff bird to the right of him is a pullet. The black bird in front of her, even though the comb isn't shown, looks like a pullet. The black bird to the left of her looks like another pullet, but not totally sure on that one. And finally, the buff bird at the bottom left is likely a cockerel.
By all means post individual pictures of them to get more accurate guesses. I just wanted to give you an idea of what you've got.