Roo or Pullet... also what Breed

[McKinnonHimestead]

So I have 7 chickens. We were told they were Easter Eggers, but I'm not quite sure about 3 of them.
The 2 Black and white ones are quite mean and are always buggin the others lady's. You cant look at them for long or they fly at you. We truly don't know it they are roosters or not. We also don't know the breed.
The big brown girl "HeyHey" what breed is she. Double the size of my other birds and has feathers on her feet.
I included 2 pictures of each bird
Thanks for your help.

 

[AlleysChicks]

The 2 black and white are boys. Not sure on breed for any of them. May just be mixed.

 

[chicks are life]

The two blacks and whites look make and they all look like mixes