I've been thinking about making something like this myself. Afraid to tell you that half the stuff in there is already outdated.

Models have their own archetypes. Since early this year almost every vibecoded website is Opus, which has its own style. It has different characteristics from a website by GPT. Yet again different from one by Gemini. Each one has its own set of traits. Opus 4.5/4.6 traits are markedly different from earlier versions. Mixing them all into one and then using it to "identify AI coded websites" doesn't work.