What breeds?

[Chuckin]

we have a lot of chickens, around 3-4 weeks. 4 different breeds, what are they?

 

[JedJackson]

Those photos aren't very clear but I can guess.

1 is maybe a buff Orpington

2 is perhaps a Delaware

3 maybe splash Orpington or some kind of hybrid like Sapphire Splash

4 probably cuckoo Marans or olive egger.

#4 may be a cockerel due to lighter coloring. The rest are too young to sex.