What assortment did you order? I think I see an Australorp, RIR, maybe a couple Wyandottes, maybe a Faverolle, and some more . Do any have special things? Like feathered feet, muffed cheeks, 5 toes instead of 4.
They are very young, but if I were to make some guesses I would say Rhode Island Red, Easter Eggers, Australorp, and that white chicken could be one of many breeds including Leghorn and White Rock.