Ok I found a pick of a scaleless hognose snake!there are other snake species that are known with this trait that aren’t bp or corns?!
A scaleless House snake has been documented https://ultimateexotics.co.za/wp-content/uploads/2015/09/IMG_8960.jpg
As well as gopher snake http://compphys.bio.uci.edu/bennett/pubs/4.pdf
Whether genetic or a fluke who knows
There are scaleless corns, rats, balls, burms and Nerodia as well. I am sure there are likely others
Ik that there are bp and corns I was asking for other species documented
Scaleless death adder and rattlesnake