FWIW,
I live in Missouri, and my local breeders have produced a few Axanthic Pieds from different people, and that is what they call them Axanthic Pieds. Not Lightning. I think the argument that only the Markus Jayne line should be called Lightning is fairly accurate. An Axanthic pied could be made from any Axanthic line, but a true Lightning only from Markus's line.
Gale