Jaded, those are classic hatchery EE traits that Illia was pointing out. They have been my experiences as well. If you have/had a bird that doesn't match the traits, post a photo and we'll add it to our knowledge base! The trick with some of the EE sexing is that it only works with hatchery-bred...
Nah, those are two pullets and one roo.
The "calico" (black, white, and partridge coloration) is the cockerel. There is deep red on the shoulders, splotchy coloring, and the closeup of the comb in the third photo shows a definite three-row pea comb. The other two are pullets. Their combs are...
Surprised that there is no faverolles, but love his colors and body shape most of all. Not having a tail yet might be evidence of slow feathering, which is nice. But if you've decided not to keep him...
I really like the cockerel in this photo, since wattles on a muffed bird tend to bother me...
EE's can look like anything, so yes, she can be all black! Pics would be good just to make sure she is a she. I have two beautiful all black Easter Egger pullets whose father was a non-standard Ameraucana and mother was a "wild-type"/partridge Easter Egger.
(Wildtype sisters on the left, Buff...
I would wait until 8 weeks to say for sure on the younger gray one. I do think that your 10 wk olds are cockerels, and the blue and red 6 wk old, but the gray 6 wk old could go either way. I don't see any definitive signs of a cockerel yet! So give that one a few more weeks.
EEs can lay any color egg, truly, but I find they tend NOT to lay the true brown of, say, a red sex link. I have loads of EEs and they lay shades of blue, green, and cream, so a lighter shade of cream may look almost white.