If you like C-like syntax and want a functional language that uses it, try Gleam: https://gleam.run/

Quite lovely looking code.

    fn spawn_greeter(i: Int) {
      process.spawn(fn() {
        let n = int.to_string(i)
        io.println("Hello from " <> n)
      })
    }

There's also Reason, which is basically OCaml (also compiles to JS - funnily enough, Gleam does that too.. but the default is the Erlang VM) with C-like syntax: https://reasonml.github.io/