I drive a Yukon and recently drove a Wagoneer for a week - about 1500 miles. I had driven them before, but this was a really long trip so I got very familiar with the vehicle.
Interior is "nicer" IMHO. Seats are more comfortable too. I did not like the "all glass" controls, i.e. everything was on screen and I felt it difficult to locate the correct item on the screen while driving, i.e. to change navigation, temperature, etc. In contrast, my Yukon still has some buttons and dials, i.e. temperature control, radio volume, seat heat / cool, etc.
My 15 and 17 year old oved it. They felt that the second row was better appointed for their needs.
The one big takeaway from all of us however was how much we disliked the exterior appearance of the vehicle.