Well I would say the bird on the left is a columbian patterned, much more commonly found in light Brahmas. The bird on the right looks like it might be trying to be silver laced, not too common in either breed.
What would help is too know what comb type each bird has as Brahmas should have pea combs (B) and Cochins single ( A) from the chart below. Granted this depicts combs on adult males, but gives somewhere to start.
Last edited: