A leucistic snakes lacks chromatophores (pigment producing cells). An albino snake has chromatophores that produce little or no pigment. Since the gene that causes a snake not to produce chromatophores in its skin, a leucistic snake, is unrelated to the genes that cause a snake not to produce pigment, a snake can be both leucistic and be albino at the same time. If your blue eyed snake is hetro for the albino and you crossed it with your leucistic-albino snake, all of the offspring will be leucistic and about half will also be albino.
Why someone would cross an albino snake with a leucistic snake is beyond my understanding, but since you seem to have one, you know that it was done.
It is also more than likely that your snakes are part Texas Rat Snake. Leucistic Texas Rat Snakes are well documented. Leucistic Black Rat Snakes are not so well documented. Since about the only difference between the two is color, and yours don't have any, why worry, no one can tell.
Enjoy your snakes.