You got truly anything here. Europeans that in general tend to lean more towards "democratic socialism" and its various offshoots, American libertarians (which have a large intersection with Musk fanboys), a bunch of extremely rich startup founders, American progressives, conservatives of all kinds, Zionists and Hamas apologists, probably Russian and Chinese psy-ops, accelerationists, preppers... name any ideology and you'll find supporters on HN.
What has changed a bit is that tribalism seems to have taken over from civilized or at least arguments and fact oriented discourse. Personally, I'd prefer if downvotes and especially flags would require one to give a reason so that repeat offenders that just flag and downvote everything they disagree with can get suspended for ruining discussion.