[thesz]

The "Go of functional languages" title should go to Haskell.

The Haskell's STM and channels implemented in it allow for most (or all) of the Go "select" statement, but in a library, not language.

[nequo]

Go prioritizes simplicity and pragmatism which is much more like OCaml than Haskell.

Haskell is more like a Rust of FP. But Rust is also much more pragmatic than Haskell.