Oh absolutely but they don’t hold titles or political power granted by blood. If the Vanderbilt family loses all its money that’s it. I’ve known several poor people whose family had been old money but lost it all. Our aristocracy has to fight to stay an aristocracy.
And yeah that’s part of the point of the senate. It was clearly meant for representatives to be the common dredges of society, whoever the hell the people of a small geographical area felt represented them at the time. Both the 6 year term and the 2 per state quantity are meant to make it a more prestigious institution. It’s more expensive to become a senator and you have to be able to appeal to people outside your area. That results in a handful of senators that aren’t alike, but for the most part they’re career politicians, rich people, backed by rich people, or from a more legal background. A representative Kennedy isn’t sure they want to be a politician that much, is breaking their teeth, or is a fuckup, kennedies are senators. The founders of the United States saw themselves in the senate or executive branch. Hell, even in states with more senators than representatives, due to the greater power of senators they’re the ones that fit those descriptions.