I've been using elixir professionally and for hobby work for the past 7 years now. Language models are damn good at it, and have been for some time.

The language isn't huge, the documentation has always been very good, and the patterns extremely consistently across the community. I almost wonder whether it's smaller community has been a benefit, as LLMs have been trained on a tighter set of code samples.

I can't speak for Ruby or PHP.

I also like Elixir, and I've used it for a handful of projects, the language may not be huge, but is conversely bloated by macros.

I dislike macros and languages allowing developers to get creative with their own DSLs.