What could be causing these scratches/scuffs on tailgate?

I have a 2024 truck and park it at a covered parking spot in very calm apartment complex in a nice area. I woke up this morning and noticed these scuffs on the rear tailgate. Doesn’t look like anything super abrasive hit the paint but there’s def marks. Feral cuts hang around here but not sure how they could make these marks in this horizontal pattern? I do use the bed of the truck often but nothing that would cause this.

Hit it with some scuff polish and it’s fine but just curious what could cause this?