> Lox must have the highest ratio of (implementations : 
   > production usage) of any language on the planet.

It's probably up there, for sure! But I'd guess that there are a million toy Lisp implementations, and more people are interested in writing a FORTH interpreter than actually using one in production. So I'd guess if we tried to get statistics it wouldn't be at the top.

Though there's probably a similar claim to be made for the Monkey-language from Torsten Bell, via his books on compilers and interpreters.

https://monkeylang.org/