Also, Java and C++, even if they are "only" used at a "few" companies that happen to have the hiring power of 1000 startups each.
OCaml? Someone other than Jane Street is using OCaml?
I think the Reason syntax is picking up a lot of steam these days, especially in areas where React is used (web frontends and ReactNative apps). You can see some of the companies using it here https://reasonml.github.io