All of them, basically. Arguing with people on Discord got pretty wild sometimes, and one of them straight up pulled up https://slurs.info and tried to use as many as he could. I suppose trying to argue with those people was a mistake, but I didn't get doxxed so all's well that ends well.
In person? Most of the homophobic or transphobic ones, though I don't think most of them were personally directed at me. K*ke (I'm not Jewish) and n-word lover are also pretty bad.