Understanding jazz has nothing to do with genres. It has to do with patience. Jazz doesn't try to be better or superior, it just tries to go deeper. Not wider. It's that minor difference of trying to wow you vs trying to slow you down and appreciate rhythm and melody Jazz is everywhere, it's a luxury for musician who can explore and not cop out or those who don't care to.
My favorite jazz musician is Paul McCartney. Favorite jazz album: Ram