Gender of EE’s??

[mc26]

I’m trying to figure out the gender of these Easter Eggers. This is my first time raising chickens and these are 10 weeks old.

1) solid white - I thought this was a pullet, but after researching I'm not sure anymore





2) black and red - pretty sure both black and red colored are pullets





3) almost 100% sure this is a cockerel - very dominant and has blue coming through in tail feathers





4) I also think this is a cockerel - tail feathers also have blue coming through and are curling over

 

[nuthatched]

You last 2 are cockerels, not because the blue, all healthy dark birds will have some sheen but for the red leakage on the wings.
The white one looks to have a fairly pink comb so I'm leaning cockerel with him.