> *noblemen might be more appropriate here than Bourgeoisie
Nobleman are the land-bound pre-capitalist elite; other than a handful tolerated for symbolic purposes, those that remain elites have done so by joining the capitalist elite, the bourgeoisie. So, no, bourgeoisie is the more accurate term.
My problem with bourgeoisie is that its too broad a term. The "bourgeoisie" is a larger part of the population than the part setting the political agenda in the US. It implies that there are all these individually owned businesses in the cities controlling the political agenda, when the businesses with a voice are really the large corps with lobbyists which are controlled by a few dozen board members frequently sitting on multiple corps boards.