[edgyquant]

As someone who is just getting into FP I’d say Haskell was the most famous language I knew of before a month ago. Lisp might count but it isn’t widely known to be a functional language most people just think it’s a weird language.

[pjmlp]

Since you are only getting into FP, here is a list of languages that aren't FP when Haskell and Miranda are considered the only game in town.

Lisp, Scheme, Common Lisp, Clojure, Raket, Caml Light, OCaml, Standard ML, F#, Scala, MLton, Concurrent ML among other lesser known ones.