EBJDs, in my opinion, are no different than the vast majority of fish in our hobby. Even those seemingly 'natural' farm/tank bred fish you buy have differences to their wild siblings. Because we selectively breed for the best looking, most colourful etc.
How common do you think your albino varieties are in the wild? Your long finned varieties? We find a genetic rarity and breed it into stock (just the same as breeding out undesirable genetics).
I don't personally believe EBJD are a hybrid, simply a colour morph.