JD Vance represents something genuinely unusual for the MAGA movement: A national Republican who is deeply enmeshed with the elite world of the conservative intellectual movement — or what’s sometimes termed for convenience as “the New Right” or “the dissident right.” As Vance himself confessed earlier this year, he is “plugged into a lot of weird, right-wing subcultures.” His transition from Never-Trump conservative to MAGA firebrand was influenced by his relationships with a handful...