Rust, Go and TypeScript are good bets.

Python too -- hear me out. With spec-driven development to anchor things, coupled with property-based tests (PBT) using Hypothesis, it's great for prototyping problems.

You wouldn't write mission critical stuff with it, but it has two advantages over so-called "better designed languages": massive ecosystem and massive training.

If your problem involves manipulating dataframes (polars, pandas), plotting (seaborn), and machine learning, Python just can't be beat. You can try using an LLM to generate Rust code for this -- go ahead and try it -- and you'll see how bad it can be.

Better ecosystems and better training can beat better languages in many problem domains.

> You wouldn't write mission critical stuff with it

People do, they also write mission critical stuff in Lua, TCL, Perl, and plenty of other languages. What they generally won't do is write performance critical stuff in those languages. But there is definitely some critical communication infrastructure out there running with interpreted languages like these out there.