can you be a little more specific about "genre?"
With G-F, I'm pretty sure you mean "multi-axis tourbillon" (and if so, in fact, they are the first, even if not by brand; guess who was responsible for the original FM MAT?...) but I'm not sure what you mean with RM and Urwerk. RM and Urwerk are distinguished by their almost unique case designs (not the broad general silhouette, which you rightly point out is well established in the case of the tonneau shaped RM, but in the details...an RM is definitely immediately identifiable, to my eyes, and in a way not done before. Same with the Urbwerk...) and to a certain extent, their movement executions (in the case of RM, thanks to, mostly, Renaud et Papi; the Vaucher based movements are on an entirely different level, sophistication and design wise...)
Not being argumentative, I don't have a dog in this fight, as they say, but I'm always curious to explore the underlying assumptions in statements like these.