Lemmy.ml is largely Marxist-Leninist, ultras are few on the fediverse. If you want an instance that is explicitly ML, then there's Lemmygrad.ml. Hexbear.net is left-unity but doesn't allow sectarianism, and is generally ML/anarchist, not generally ultra.

[–] Equality_Executor@lemmy.ml 4 points 2 days ago (1 children)

I have an account on lemmygrad as well so that's good news to me. I'm now thinking that it's more of an issue of me not fully grasping how the instances are organised having come from reddit.

Thanks for your input, my friend :)

[–] Cowbee@lemmy.ml 5 points 2 days ago

No problem, comrade!