Its not foolproof but I swear I saw somone maintaining a list, possibly hosted on github.
It was bringing awareness to (fully) open source apps/devs that had started using vibe code or partial AI in the app/software code in some way.
I can’t even remember some of the more surprising offenders but wanted to check over my installs.
It might have been android based but possibly not.
Unless I’m missing something, that link is just a list of people who submitted their names to say that they don’t use LLMs.
I don’t think some individuals choosing not to use LLMs changes my opinion that pretty much all software has LLM-generated code in it these days.