Reddit mentions of The Library at Mount Char: A Novel

If you're up for a morally ambiguous protagonist (good goals, increasingly ruthless means, scheming and maneuvering like a traditional villain) you might enjoy ~MY BOOK~

The Traitor Baru Cormorant

On the same theme I really recommend Kameron Hurley's Mirror Empire and Scott Hawkin's The Library at Mount Char, both of which feature children who lose their parents and grow up into calculating, driven, stupendously ruthless operators.

e: you may also enjoy the works of Blizzard Entertainment

You should definitely read Gaiman's comic book series Sandman, too. It is both the best thing Gaiman's ever written and one of the best comic books ever written.

After that, you should read Good Omens by Neil Gaiman & Terry Pratchett. Amazon is adapting it as a mini series set to debut sometime 2019.

As an aside, after Gaiman, you may want to give Brom a try. Lost Gods features many of the same themes with a slightly different tone. The Library at Mount Char also has a great blend of the weird and fantastical.

Not exactly science fiction, but I've read all the authors on your list and I really loved The Library at Mount Char. Totally original, and I had a hard time putting it down. One reviewer says it well- "It's listed as fiction, but you will find it under fantasy. But, that is not what it is. It is about knowledge, research, theory, practice, and science. Science that is not real to us."

Haxan by Kenneth Mark Hoover is a pretty good Weird Western that needs more love/reviews. Also give these a try:

The Goblin Emperor

The Library on Mount Char

Academic Exercises - ($2,99 right now!)

Uprooted

The Golem & The Jinni

The Incorruptibles