I don't know much about dominant/recessive barring, but my first thought when I looked at the pics was that the chicks had to have orpington in them because their leg color is whitish pink, not yellow like most of the other breeds you listed.
I have a mixed breed rooster that was barred like a dominique as a chick - then he molted into adult plumage and has a combination of what I would call partridge/ and crele or barred coloring. He didn't show the orange colors at the neck until he started getting the adult feathers.
Interesting thread!
edited to remove double image
I have a mixed breed rooster that was barred like a dominique as a chick - then he molted into adult plumage and has a combination of what I would call partridge/ and crele or barred coloring. He didn't show the orange colors at the neck until he started getting the adult feathers.

Interesting thread!
edited to remove double image
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