Out of the loop

Disclaimer: I'm not American, I don't live in the US

JD Vance didn't exist in my life before he became vice president. Now, I am aware that I also don't know anything about most vicepresidents in the world. But I've seen a lot of people who are also USA outsiders making comments about him as if implying something else, as if relying on facts everyone ought to know. I get the feeling most people have already heard about him from before and I'm late to the party.

So, what do I need to know, other than his political affiliations? Yes, we all know who the president is and that says a lot, but, is Vance notorious for anything else?