See, the thing is, even by generation that would be different. Handmade and possibly luxury would be leather in the early years, but cloth was not common at all early on.
In the 70’s there was this fascination with velour and “designer” cloths, which would be “premium” IMO. Standard at that point would be cloth faced vinyl, with plain vinyl being basic.
You get to the early 80’s, and vinyl or vinyl faced cloth would be basic, full cloth would be standard, and leather definitely would be at the premium level (a vinylized leather, with lux/handmade using genuine leather).
In the 90’s onward, your “basic” seats would likely be cloth faced vinyl, with standard being full cloth.
At least IMO.
Edit: You can probably think of other standard interior features as being in various forms of standardization across the years, accounting for more than just changes in material. Like your lux cars would be getting power windows in the 60’s, your premium cars getting them in the late 70’s, and your standard cars getting them somehwere in the mid-late 80’s. It has only been since about 2010 that power windows have become standard on basic cars.
Air conditioning? Optional all over the place by the 60’s. Probably standard on lux by the 70’s, premium in the 80’s, and standards by the mid-90;s… and again only standard within the last handful of years on basic cars.
Power seats… standard on lux in the late 60’s. On premiums in the late 80’s to early 90’s. Standard cars only recently (and on a lot of them they’re still an option)