The BluEL complex is quite large:

Butter/Lesser
Bamboo
Mojave
Russo
Mocha
Phantom/Mystic
Special (all three lines)
het Daddy


As far as "whitest" BluEL. You will get a handful of different answers and all of them are subjective. Over a decade in this hobby has shown me that most all BluEL combinations yellow out to some extent becoming less white and more cream and they also tend develop a visible dorsal stripe. The all-white Pied BluELs are stark white but you run into the microphthalmia problem with them.