This is a cool analysis, but suggest caution is needed to avoid giving wrong impression of the "ranking" of historical developments, imho. Maxwell's theory was not disproven by subsequent developments, it was just found to not cover quantum phenomena, the general principals still apply, his four fundamental equations resolving the speed of light and even the simple but at that time extraordinary fact that electromagnetic waves had to fly through air and space are still very much the foundation building blocks of all electromagnetic theory, requiring extraordinary powers of maths to fully understand.
Even better, his equations have been adopted also to describe also acoustic field phenomena, for analysis of things like sonar imaging, they work pretty much the same way with water and air having both optical and acoustic refractions etc.
He still has to be the grand daddy of all electromagnetic theory, I think :)