[JackMorgan]

I've used Scala, Clojure, Haskell, and F#. I'd say F# does a great job of providing a happy middle path between the strict side effect management of Haskell and the advanced OOP features of Scala. It also brings the well-designed ASPNET CORE stack.

If I was starting from scratch and just wanted to learn, I'd say you'll learn plenty from any of them. Haskell has the most to teach about purity in FP, Scala the most about OOP, and Clojure the most about metaprogramming.

F# has the most to offer for just getting things done quickly. It is a language of practical compromises. It's not the most pure, it doesn't bring the most advanced OOP, and it's metaprogramming is tricky. However F# is what I grab first when I want to build production software quickly and safely.