What breed and gender are these?

[CalicoPaddles]

I bought these in May from Tractor Supply. They are supposed to be black sex link pullets. Only one looks the way it is supposed to. One is apparently a rooster (giant compared to the rest) and the last two are mutants. Any thoughts on ID?

 

[JedJackson]

1 does look like a black sex link pullet

2 is a barred rock cockerel or maybe BSL cockerel

3 is a pullet, maybe a hatchery quality barred rock or else some type of hybrid using that breed.

4 looks to be a silver based black sex link pullet.

 

[Pigeony]

Black sex links are mixed birds that hatch out with one color chick down for females, and another for males (males have a white spot on their heads at hatch, females don't) so they can look quite different from one another.

1st one:
black sex link pullet

2nd:
barred rock cockerel

3rd:
mixed pullet, early maturing

4th:
black sex link pullet