Like look at classical music enthusiasts, or even rap. And obviously emo/hardcore, but I'll admit that yes that's a pretty small group in comparison to the others.
Even conceding that, I would say that a classical music purist, a rap purist and an emo/hardcore purist put together overall have more musical diversity than (say) three people who listen to many subgenres of pop and rock but don't touch classical or rap.
Anyway I think Democrats win this just on broader ethnic diversity.
I'm talking about the individual people. Like if you have two groups of three people, and the first group have all been to 15 states, but it's the same 15 states for all three, and the second group have only been to 10 states apiece, but they're different states, then the second group has obviously been to more states overall, but the first the average person in it (aka all of them in this scenario) has been to more states than the average in the second group.