Ah. Then I'd hit up the marketplace here. Deleting the rear seat is the first mod a lot of folks do around here. There should be a seat out there for you.
My 2022 JLR Black Leather Rubi rear seat has been in the master bdrm taking up space since the first week of ownership and never been sat on. I've planned on mounting it to a rolling cart but maybe it should be in your Jeep. What is the cost at the Stealership?