You are confusing a lot of pol science terms, as well as using some which aren’t part of pol science at all.

All modern democracies are representative democracies, as in voters votes for representatives to represent them. Switzerland has elements of direct democracy, but on a foundation of representative democracy as well. Constitutional, presidential and liberal democracy are not an actual meaningful terms in political science.

Technically the US is a representative democracy, but I am pretty sure OPs is asking about the practice of the thing. And the practice is very different from the written word about how it was supposed to be, especially this recent presidential term.

This is America.

This is the internet.

Grateful Dead is definitely huge in Europe as well.

That is taking it a bit too far. Dolly Parton and Johnny Cash are definitely known, especially because they kinda crossed over into over genres than straight country, but 99% of other country artists aren’t.