Well I can’t speak to most of those, but I can definitely speak to JS: pretty much the only things holding back FP are people’s aversion to reduce and their aversion to grafting monads where they don’t fit. Otherwise it’s pretty much idiomatic to write functional-core code in JS basically everywhere. But again there be dragons at the edges.

Java and C# can absolutely be written in an FP style and it is definitely winning grounds.

Like I said. Functional-ish. Still way too many ThingDoers and other associated boilerplate to be actually interesting. A nice option though if you're working in a legacy codebase or your employer requires it.