Lisa,
That's such an awesome looking nest! And please stop showing pictures of barred birds of that type.. there's just something so appealing about those birds.. Idonotneedmorechickens! LOL!
Now about those roosters, the two on left look like they are more likely either leaky blacks(like monkey says about black stars) or gold base birchens(like 'black copper' marans are). Not sure about the left side rooster.. the true signs of a BBR bird is having a classic chimpunk pattern down as a chick- with unbroken and even stripes down the back and on head also. BBR roosters have a clear "duckwing" patch on the secondaries(hence their other name- red duckwings). He's still molting or not showing the wing well so I can't tell if he has a duckwing spot or not. He does have a lot of gold leaking on his breast and his color doesn't look quite right for a BBR, which makes me think he may not be a 'true BBR', instead being either again a leaky black or a gold birchen. In any case you know all of them are BBR carriers because of their mother. Both black and birchen are dominant over BBR btw.
They still could be 'usable' if you don't have either a wheaten or BBR rooster available now.. if you breed any of those to these hens, save any chicks that show any striping on their down but still save what you can raise and select out sons that show a lot of leakiness, hoping they are the ones not pure for black and breed them to a BBR hen
If you use a wheaten rooster, be sure you realize that the roosters can look Crele however the hens will look very different than a 'true crele' hen. If your goal was a Crele rooster then a wheaten will be quite fine to use.
The mating will still be sexlinked. It does not matter if the hens were pure or mixed, as long as they exhibit the sex linked trait and are bred with a rooster lacking the trait. Using any of those roosters with those barred hens will be 100% sex linked mating.
A thought: if no BBR or wheatens are available.. breed one of those back to the mother to get BBR type chicks? If you would have liked blue eggers, that may also improve chances of getting blue eggers out of that. The BBR daughters could be useful for mating with sons out of the barred hens. Decent chance of hitting on blue eggers amongst green eggers too, maybe.