What a great list of names and inspirations. I recognize some that are inspirational to me: Meola, Keena, Salgado, Sexton, Shaw...
When I started in photography, I learned a lot in terms of technique with John Shaw's books (Landscape photography, Close-ups in nature). Very useful and wonderful photos too.
I was very early on impressed by Salgado's work, his Ethiopia series, the Work series, and Genesis. To me, there is a common thread across his photography, and the word that comes to mind is "biblical", both in terms of scope and especially the way the light is handled, and the way the human race is portrayed amongst the natural realm.
I also like McCurry's work a lot, again, it has to do with the human element "lost" in the landscape, as a point of scale only.
One of the "landscape" books I have enjoyed the most is one that was published by a series of photographers in 2000, which was the result of project worldwide, where they went out on the dawn of 1 January 2000 (or 2001?) and shot the landscape in their home country. I do not remember the title now, but it is an amazing collection of photos.
Rgds