Ha! I think we have matching chickens! Here's my guesses, but hey, I'm new at this too!! Number 1 looks like an Easter Egger cockerel, he looks just like my Owen that everyone here decided was a boy. Number 2 looks like a cockerel too, now that I know what to look for... Not sure on breed, maybe another EE? 3 and 4 look like Red Star pullets to me, I have one about the same age and they look very similar. I was told when the combs are that large and red that early chances are good it's a boy. See how 3 and 4 have almost no comb?
I am fairly new to chickens as well, but the first one has a beautiful beard and red saddle feathers. Any chance it could be a Favorelle of some type? I have Salmon favorelles and they look just like that, but different colors and I know the Favorelles come in a variety of colors. I agree boys on the top two and girls on the bottom. We have red sex-links and those girls could be sisters.