Multicolor blue partridge brahma chicks

[Kayakoda13]

I need help identifying what these babies are called. I see I have a blue splash and 2 blue brahma. There's and orange and white and orange and blue I'm not familiar with the name of. There are 4 Americana mixed in,they were freebies from the breeder. It's the brahmas I'm more concerned with. I want to breed for the blue partridge. I'm not sure where to begin here with genetics. One of the brahmas has very pronounced waddles, I'm thinking it may be male. Any help and thoughts is appreciated.
I have to add these birds are so calm. The buff brahmas I had a few years ago were not. The roosters were always jumping and kicking at me. I can pick these babies right up without them running away.

 

[JedJackson]

I only see the 3 Brahmas, the two blues and the splash like you stated. They're not going to make partridge or blue partridge chicks, though. Those are separate varieties.

I think they are a bit young to sex, but you say one is already showing wattle development, so that is probably a cockerel.

 

[Kayakoda13]

I only see the 3 Brahmas, the two blues and the splash like you stated. They're not going to make partridge or blue partridge chicks, though. Those are separate varieties.

I think they are a bit young to sex, but you say one is already showing wattle development, so that is probably a cockerel.

The three orange are brahmas from the same clutch as well.