I have a 2022 X and a Gravity. Random thoughts:
1) Third row - useless in the X but my kids fight over it in the Gravity. It’s great.
2) Interior - depends what you like, but the interior is really well designed and feels a level above Tesla.
3) Driving - it’s planted and feels like it’s on rails. Super quick and amazing to drive. Our X just sits in the driveway now. Was great, but to your point, Tesla’s neglected it.
4) Ride - smoother and more enjoyable than X but still can feel the road
5) Seats - you covered. Gravity’s are awesome.
6) Software - Tesla wins here. They have a 10+ year head start and are also much better than Rivian. Lucid will keep improving, but you need to go in knowing Lucid has bugs, etc.
7) Cargo - Gravity is huge inside. Lots of space. Easily fit my huge dog kennel in back. Can’t fit in X without second row going down.
8) Range/Charge - Better range on our Gravity and it charges faster at Tesla SCs than our X. Plug and charge has worked well.
You hit most of these, but as someone who has an X and a Gravity (and an R1S) thought it may help to chime in.
Hope that helps.