Look like pullets to me.
Chest bumping is normal, our hens still do it as the dynamics of the flock seem to change, especially when they are young, during molt, and after a death of the flock.
EE's in my experience, pullets will either be a solid color or even patterned, and cockerels will be uneven color, with rusty red towards the end of their wings, cockerels in general also seem to have larger legs and their stance is noticeable early on.
Your EE pullet will be stunning trust me!
Your bird is a little pink, could be the heat, but I don't see anything that says for certain this is a cockerel yet, I think you have a few more weeks to wait unfortunately.
A little early to tell definitively, but your GLW and BR look to be a Pullet to me right now, but the BR has more white than I am used to seeing this early on, so keep an eye on the BR, unsure of the other as I don't have experience with that breed to give an opinion.