The spectrum of “mainstream” US politics could be defined as follows:
Recycled Ted Kennedy liberals + wokeness (AOC)
Recycled FDR liberals (Bernie)
Neoliberals (most Democrats)
Moderate Republicans (whether de jour like Romney or de facto like Biden)
Blue Dog Democrats/populists/assorted weirdos (Trumpists)
Neocons (right-wing Trotskyites aligned with the MIC/Deep State/Z-force)
Know-Nothing presenting neocon puppets (Tom Cotton).
Pretty bleak, indeed.