Yes, for me the big revelation was when I learned OCaml (coming from Erlang) it was such a massive relief, it felt like half of my brain got freed to think abou

Yes, for me the big revelation was when I learned OCaml (coming from Erlang) it was such a massive relief, it felt like half of my brain got freed to think about things that matter. After that, once it clicked, most languages of this caliber feel "at home" and I can use them quite easily - F#, Rust, Swift, TypeScript.