Perhaps but I knew that info and agree with you 100%. While not a recognized breed most people who know chickens expect the probability of a beard and muffs plus blue-green eggs when the term Easter Egger is used since that appearance has been around for many many decades.And that's more than you probably wanted to know!
Interesting that they are all solid color. I don't think I've seen many (any?) EEs that weren't multi colored. Where did you get them? They are lovely looking birds.
Based solely on the combs I'm guessing all are cockerels. Often I'll guess EE gender based on even patterning on pullets, patchy on cockerels.