Ive had 2 Limiteds so far, 1 2019 and 1 2020. My 2019 had 1 rear that sounded normal, the passenger rear sounded horrible tho. It sounded hollow, but also kinda vibrated when shut, almost like when you would shut a door too hard that doesnt have the top glass surround and the window wasnt all the way up. I knew it wasnt right, but i never messed with it.
My 2020 limited does not have this issue, the rears may not sound 100% like the fronts, but there is no vibration or hollow sound.
Shawn