I'd say that among pure functional programming languages (i.e. excluding Erlang, Scala and OCaml) Haskell is the language most suited for real-world usage.
Yes, there is a lot of research being done on Haskell, but a lot of the research is centered on areas that more or less directly contribute to typical real-world usage. Consider the recent introduction of linear types for example: They're both exciting from a type theoretic perspective, but could also improve some real-world scenarios (even though at this point linear types are still quite new, so there's not a lot of examples out there).
Yes, there is a lot of research being done on Haskell, but a lot of the research is centered on areas that more or less directly contribute to typical real-world usage. Consider the recent introduction of linear types for example: They're both exciting from a type theoretic perspective, but could also improve some real-world scenarios (even though at this point linear types are still quite new, so there's not a lot of examples out there).