S. fryeri is the correct name, but I believe the variant with a white blaze is known as a "white knight". See how this can get confusing when common trade names are used.
IMO, 99% of the albinos/OB's, etc, are all man made hybrids. I am on good terms for many years with one of the breeders in South Florida that has created a number of these fish, so unlike those speculating on the internet I am quite certain what they is, and what they is not. lol