White Snakes

[asplundii]

Almost every super or ALS created from the BlkEL or BluEL has the ability to be "pure" white, but can also have pattern.

I will disagree with you here, there are some combos within each group that will never be pure white (like SuperPhantom or SuperVanilla).

not sure what dictates the bleed through of the pattern in some but not others.

It is determined by the "strength" of the allele(s) you are working with, "stronger" alleles (e.g., more highly expressed mutation) will give reduce the likelihood of patterning/colouring arising. Lesser is stronger than Mojave is stronger than Phantom and so SuperLesser is less patterned/coloured than SuperMojave is less patterned/coloured than Phantom.

I am getting ready to do a bucket of white snakes picture. Waiting on one to come out of the egg. No two of the same combo. Will be interesting to see the opinions on the "whitest".

This will be interesting to see however I think you already know my caution that what these animals look like as hatchlings can be very different to how they look as adults. What people say is the "whitest" at 100g could look very different at 1000g.