I really distrust AI aggregation and synopses. It doesn't think, it regurgitates words based on its training data. So many violent people are just called "right-wing" without a definition of terms. It's become a meaningless label. Hell, the Democrats are basically authoritarian center right according to a lot of analysts.
Don't forget that a lot of incidents are incited by agents provocateur, too, from finding the dumbest kid in the mosque to encourage a "bomb threat" they can bust all the way to orchestrating the government kidnapping plot. And there are all kinds of rumors surrounding everything from January 7th to the Oklahoma City bombings where... Irregularities... suggest we aren't getting the whole story.