CS Lewis is 5th most popular author at LT

I have known for years that Lewis was one of the widely acclaimed evangelists in the 20th century, but I can't recall ever previously noticing that LT ranks him as the fifth most popular author of all time. (I find that just by clicking on his name after searching one of his books). Congratulations to all who are his friends (LT Group, also Inklings, and one other.
Does anyone know how to find who are #1-4 and further down the list?

Go to

https://www.librarything.com/zeitgeist

and look at the Top Authors list.

Many thanks- on my way.