I've not seen or read about an anti-fascist who favored anarchy or censorship, both of which promote authoritarian models of governance, a.k.a., forms of fascism.

The Antifa US movement. I don't think you understand the anarchist ideology. Most anarchists advocate for direct democracy without representatives. Today, in the U.S. antifa members primarily identify as anarchists, usually anarcho-communists specifically. Kropotkin's "conquest of bread" is the classic example of this ideology

Anarcho-communism is a theory of anarchism that advocates a communist society with common ownership of the means of production,[95] direct democracy and a horizontal network of voluntary associations, workers' councils and worker cooperatives, with production and consumption based on the guiding principle "From each according to his ability, to each according to his need."[96

Heres some articles about anarchists and antifa

https://www.fdd.org/analysis/2021/06/14/behind-the-black-bloc/

https://www.reuters.com/investigates/special-report/usa-antifa-profile/

They support democratic forms of leadership.

Again, as do anarchists, which most antifa members claim to be.

And yes, they promote censorship, and even violence against speakers of speech they dislike.

https://www.wnycstudios.org/podcasts/otm/segments/antifa-speech-free

https://scholars.law.unlv.edu/nljforum/vol3/iss1/1/

This is why right wing people call them fascists, which isn't that inaccurate, as you point out yourself that censorship is a tactic of fascist governments. Idk if thats quite right, but they are certainly a disgrace to anarchism