Yes, each breeder's bloodlines may be different than other breeders, so you have to ask. And of course, I wouldn't be surprised if there was a smidgen of emoryi blood in many lines that people have no idea of, but it is probably too small of an amount to make any difference in most cases.
I did have some creamsicle blood in a few candycanes back in the early '90s. Most of those animals are gone, or have been mixed with pure corns enough that they are "virtually" pure corns now. But I lost some records (around '92 - '94 If I remember correctly) when some of our Glades Herp employees were caring for the colony. So I can't say with certainty whether or not some of my candycanes still have a tiny bit of creamsicle in them. So, although I don't think it makes any difference in any practical way, I will leave the part about creamsicles in my website description of them so that those who are vehemently opposed to "tainted" blood will know that they may only be 99.something % pure, or something along that line.
The same thing goes for my crimsons, BTW. I got my original pair from Frank Pinello, and he told me there was some emoryi in their background. I can't tell that by looking at them, but that is what he said, so I pass it on to my customers.