There are actually few Famous American Photographers who are not shooting the Grand and Glorious Western Landscape.
How many US photographers can you name who are from the American South, or East, or Midwest. Clyde Butcher, who photographs the Swamps of Florida and Paul Caponigro whose best work was done in the British Isles are the only two who came to my mind.
The work of John Blakemore and Hamish Fulton are certainly in a class with theirs.