It's rather doubtful that Ameracuana were involved, due to a complete absence of dominant traits like beard & muffs.
https://www.mcmurrayhatchery.com/whiting_true_blue.html
McMurray's own page has a photo of a blue pullet with muff/beard. It's the first photo I see when I load the page.
And I think I see puffy cheeks on some of the young chicks in another photo, although I'm less certain about that.
The text description does not say anything about whether they are supposed to have muff/beard or not, and neither does the list of "quick stats."
Do a search for "Minorca" and you will get some results with White Faced Black Spanish. It happens with all the breeds.
It's really dependent on the person to label things.
It doesn't change the breed or variety characteristics. But it does make things confusing sometimes.
Yes, that happens when doing google searches.
But I expect the hatchery selling the birds to get their own photos right.