You forgot to list anti-vax, wild conspiracy theories, non-support of Ukraine (and oblique support of Russia), fiscally irresponsibile ideas (like "deficits don't matter"), tendency towards alarmism (to get attention), a demonizing of one another (a fake-polarity which each needs to try to be relevant, a bizarre cooperation actually), Communism/Fascism as State-controlled institutions that suppress freedom, information, religious expression (and tend toward killing, imprisonment, war to cement their ideaologies) as horseshoe commonalities.

In fact, it might be a shorter article writing about how the far-right and far-left are different than how they are alike. Currently, environmentalism/feminism/LGBT/Immigration come to mind.

It would seem there are two kinds of people in our electorate, moderates and extremists.