Every time I see people talking about this, I see new alleged LLM fingerprints. Keeping up with that is a significant burden, especially without a centralized place to easily find an up to date list. This is even harder for me specifically because I have been told that my writing style (even when looking at things that I wrote before LLMs became widely available) closely resembles that of an LLM.
I wouldn't focus on it. People notice naturally after spending time with an LLM rather than focus on lists of phrases