I've got a neighbor whose cat is veritable feline Houdini... he gets out every so often. And usually, it's to come over to my green house and steal carrots. (yeah, don't ask. he doesn't eat them. doesn't take them home. We have no idea what he does with them.)
Don't ask questions. just embrace it. (I've gotten to catsit Sykes on a few occasions now. the old man is a blast.)
Reminds me of someone I knew who had a cat that would repeatedly and randomly just turn up in their house and be all like, I live here, you're my humans. They would post photos of the cat with nothing but the hashtag #notourcat but I ALWAYS read it as No Tour Cat. Was it like a musician cat that could never get any tours? Confused the hell out of me until I got the backstory NOT OUR CAT. 😅😹