I think Elm is a fantastic "simplified Haskell" with pretty good beginner-friendly guides. It's unfortunate that Elm is mostly tied to the frontend and has been effectively abandoned for the last couple of years.
Interestingly, Elm has inspired a host of "successors", including Gleam + Lustre, which look really great (I haven't had a chance to really try them yet).
Interestingly, Elm has inspired a host of "successors", including Gleam + Lustre, which look really great (I haven't had a chance to really try them yet).