I'm not sure who first graded wall to wall, at least on "typical sites" but that was certainly contrarian thinking to using natural features. Or the first to build in mountains or the desert, etc.'.......
All of the early American designers who adapted golf to our natural conditions rather than trying to perfectly copy the seaside courses........or the post WWII who sought to distance themselves from anything old world, and set a whole new style, like RTJ.
The first irrigation system mfg. would be somewhere on the list, as would Brent Wadsworth , who basically invented the modern profession of golf course construction.
As far as the intent of the question, I agree with perhaps Mike Strantz, and more especially, Pete and Alice who made the entire profession change direction.