I don't know, but drow religions are represented weirdly. Maybe it's something to do with all those retcons that were done to them too, I really don't like what was done to Vhaeraun and Eilistraee in some editions.
I think they added Eilistraee because she is the popular one. They did do a lot of strange stuff with these deities but since they are both alive now I wish to also have Vhaeraun as an option
Vhaeraun looks like an interesting option too, but all of its clerics are men ...
You can follow him as something other than a cleric and women also follow him. There may still be masked traitors in 5e, with these you can have your female cleric.