I don't know if those things you ask are in Haskell specifically, but what I do know is that Haskell concurrency is pretty much best in class. You get channels (Control.Concurrent.Chan is in the stdlib), STM, green threads (forkIO). You can also get stuff like async (from the async library) or streamly (even higher level than traditional async). I'm not 100% sure if you can push insane speeds with it (even though Haskell is really fast, it's just very tricky to optimize correctly) like you can with Rust, but the developer experience on concurrency is just through the roof, imho (dare I say even better than rust). STM is just the best kind of magic.