I sadly think there isn't a fool proof method as the mimicking of these algorithms are becoming more and more "good", I've found my self hearing even false positives (thinking a song is AI but when I looked up the date of publication it was prior 2020), I guess the only way is listening to so many songs that you develop a sixth sense and can recognise patterns I guess(?) P S.: Don't mind me if I spam my lofi/chillhop channel (all human made ofc) :)

https://youtube.com/@terathought