Best thing I've used is the red shop rags. Dip them in hot water, ring out and go to town on the interior. All hard surfaces get a buff with Meguiars Hyper Dressing diluted down so you don't get that old school armor all greasy shine. The seats get a wipe down if they aren't dirty with the red rag and water. Then they get Meguiars Leather cleaner and conditioner. My best advice is to make sure you keep your interior as satin finish as possible. The days of the greasy/shiny interiors are long gone. Does nothing but give you a dusty finish and greasy hands/butt.
Also, for those who are OCD when it comes to keeping a clean ride, check out this video for the same seats you speak of. Also, check out his other videos as well. I've learned a lot from Larry, who in my opinion, is one of the nations top auto detailers.
https://www.ammonyc.com/detailing/ride-along-125/
Kevin