What are the less popular languages on this list (or not on this list) that you actively (or immediately plan to) use and want to see succeed? For moderately p

What are the less popular languages on this list (or not on this list) that you actively (or immediately plan to) use and want to see succeed? For moderately popular ones, I'll replace my usage of Go with Rust (and Java with Kotlin though I haven't used either much of late.) Dart is fine for non-AAA mobile. My unpopular choices are F#/OCaml, Elixir, Elm (maybe), and for experimental use Pony and Zig.