Comment by johndough

But then again, the identity could also have slipped into the model from other sources during pretraining. The internet is full of "I am Claude": https://grep.app/search?q=i+am+claude and variants https://grep.app/search?q=i%27m+claude

Either way, there's probably no significant portion of Mythos/Fable or Sol in there as OP has stated.