a little breed help please, dumped roosters

[Katie_in_Belgium]

i everyone, im not new, have been a member for many many years, but lost all my account details so have made a new one.
i run a small chicken rescue out in Belgium and have just had someone dump 12 roosters over the fence
im normally good identifying breeds but these have me stumped. could they perhaps be a cross instead of pure breed?
i believe the black ones are australorp? but the reddy white ones i have no idea..; can anyone help

 

[Squishychicken]

The blacks look Australorp and I see butter cup combs on the others but coloring Is off so maybe poorly bred buttercups

 

[Katie_in_Belgium]

i first thought buttercups, but they have a single comb and the colour is definatly off

 

[Brahma Chicken5000]

Looks like Chamios Campines.

 

[Katie_in_Belgium]

just googled that breed as ive not heard of them, and do look strikingly similar, thank you!

 

[Squishychicken]

Looked like they had a butter cup guess it was angle of pics agreed with chamios campine though.