ID4 AWD Pro
Yep, some kind of vinyl. At least id4 got perforation. Model Y is much worse, don't even have any holes and I gave it up after a summer test drive."leatherette" is basically plastic (different grade, but still plastic). The problem with it - you will swear in hot weather (remember - nonbreathable plastic). That is why it is so important to have it perforated and ventilated, Unfortunately, ID.4 skipped on ventilation seats...
BTW, this is one of the reasons I returned Model Y after 5 day's - I was getting out of the car with wet pans Texas
Greetings from South Georgia