In my above post, there's links to lesser mojaves that have a faint yellow dorsal stripe.
I checked morphmarket too and the super lessers (when not combined with additional genes) are also all pure white. So in fact, I think super lessers are the only ones that for sure stay pure white... which is what I also found years ago back when I was deciding between super lesser or lesser mojave haha. For what it's worth, my super lesser had bug eyes as a hatchling. Now they just look kind of strange and unique, but not bugged, like he grew into them. So I'd just avoid super lessers with ridiculously bugged eyes if you're getting a hatchling.
Not that there aren't lesser mojaves that are pure white, but ones with a yellow dorsal seems like it pops up fairly often.