@nicalandia any comments? Seems like something you might have some knowledge of.
I haven't dug into the red broilers but my guess is that selective breeding for a few generations may be involved in at least some of them. I have no reason to believe that just because two different hatcheries may call their birds Red Broilers that they are actually talking about the same birds.
Guys, the ones that have crossed Cornish X, do you know if the Cornish X is white because of dominant white or recessive white? If it is dominant white the first generation crosses are not going to be red. If it is recessive white they might or might not be, depending on what else is hiding under that recessive white.
I wonder if someone may be selling Rangers under the marketing name of Red Broiler?