My suggestion: The Comfortable Party.
Mostly white mostly old.
They got theirs — privilege and entitlement abound.
Joe Biden didn't "rise" - he was hoised up by Obama and the Democratic establishment. He's still trying to figure out where and who he is.
I wonder why you didn't mention Lindsey Graham, since it was he and Klobuchar and McCain who were in Ukraine in 2016, supporting NATO, and lubing up the beginning of this proxy war with Russia.
Meanwhile, as I read this simplistic political analysis, I am also counting the war criminals you include in your moderate (sic) idealized party.