Hmm, I actually like this request because it's a puzzle. You like really large, bestselling secondary world largely pre-industrial epic war series (and some SF ones,) especially those with Chosen Ones and Brandon Sanderson. Except for some of them. You've read "90% of the recommendation threads" which contain oodles and oodles of recommendations for bestselling and big selling secondary world largely pre-industrial epic war series, and you still "haven't found what I am looking for yet," without you really specifying what that key ingredient might be. So really, it could be anything that might interest you, except that it's definitely something.
So, what to pick. Some possibilities, keeping Wheel of Time and your other mentions in mind:
<snip>.
Bookmarks