Lol, that video is pretty relevant to this discussion, four chords used in a large number of pop songs. I read and listened to some of the evidence in the case where the Marvin Gaye heirs sued the writers of the song
Blurred Lines, and that was about rhythm sequences and the rhythm instruments used. The songs actually sounded very different to me.
These law suits seem to be about some underlying rhythm in songs where the melodies, or tunes, sound very different.