It feels like this list, if it focuses on individual authors is - if successful - overwhelming in scope. There are, what, tens of thousands, hundreds of thousands of authors ? If 1%, for argument's sake, this list would have thousands of links.

Nonetheless, I'll promote an author of both non- and fiction ebooks I've bought from, Michael W Lucas [0].

[0] https://www.tiltedwindmillpress.com/