Rock-n-roo.......most of those chicks look like barnevelders. I don't have Partridge rocks, so not sure how they feather in, but the 2 with dark wing feathers might be Partridge rocks, not wellies.
Here's barnevelder chicks from a breeder (ignore the mottled java's in the picture):
Welsummer chicks, also from a breeder:
Pure barnevelders should not have a V on their head. If they do, they are likely crossed with welsummers.
Here's barnevelder chicks from a breeder (ignore the mottled java's in the picture):


Welsummer chicks, also from a breeder:


Pure barnevelders should not have a V on their head. If they do, they are likely crossed with welsummers.