This appears not to have been rigorously studied. Anecdotally, the further west one goes in America the higher the likelihood a suffix indicates low SES.
Sorry to bring up race but it’s the US and the SES is too highly correlated to ignore these in a data conversation and we all do things slightly differently roughly by race/background, there’s no monoculture in the US
I guess latest wave would be “Techno Mechanicus” or whatever the other silly names we heard lately.
I used rich as shorthand placeholder of blue blood, noble, famous and rich. Not everyone who is rich is noble and noble doesn’t mean they are rich.