I don't really know much about him except that everyone seems to hate him too.
Unrelated ramble: This election reminds me of the leadup to the election that Ventura won in Minnesota with 2 guys everyone hated leaving it ripe for a weird third party to win. I don't suspect RFK could pull it off, because I think Ventura's celebrity and centrism was an important part of that formula.
At his best he's a lib, at his worse he's an outright reactionary. Between Trump, Brandon, and Kennedy if you are planning on voting Brandon is the best of the three