As soon as I saw the title, I thought of the streetfighter character, but this was actually an interesting read on a programming language, I had never heard of before
The slogan I've proposed for the language is "Guile goes with everything." Because Guile was designed from the outset to run embedded or standalone, and to transpile other extension languages to Scheme or a Scheme-compatible representation, I think that fitting. See: https://knowyourmeme.com/memes/guiles-theme-goes-with-everyt...
There was a forum where Tom Lord, the creator of GEL talked about the early history from his perspective. Unfortunately I cannot remember where it is. Sadly, Tom Lord passed away in 2022.
It's the official GNU extension language, so it's fairly widely used in the GNU world I think.
It's also the language of the init system/service manager on GuixSD (the full OS distribution based on Guix), GNU Shepherd (a.k.a. dmd), and IIRC their initrd runs a Guile program instead of a shell script.