Here I was, thinking Helen Keller had reincarnated in my body overnight.
Old Lexus and Volvo leather, assuming you mean 80s and most of the 90s for the latter, and most of the 90s for Lexus, I wouldn't call it leather. I've seen 1LS order sheets and while it does say leather, what I recall smelling and touching in those days was not what I'd consider leather. The material was hardly different than the cheap J Crew leather wallets everyone was sporting back in those days. The mid 90s were a strange time for many. It was easy to pull a bird with something incredibly stupid today. It was only the early 2000s when I began noticing what I'd call real leather. The Honda Accord EX in the 7th generation offered a leather interior option that was incredibly soft and supple, like leather. Softer, suppler and much more durable than the Dakota offered by BMW. It also carried a fat price tag. I believe the leather option was around $5,000. The E46 330CI either offered it as standard or as an upgrade. I remember seeing a few up close and I could tell it was real leather or something very close to the real stuff. Certain processing techniques and dyes alter the structure of leather.
Honestly, I'm trying hard to remember here, but I'd say the leather from the 1LS was more vinyl than leather. It even smelled of vinyl and not leather. BMW did real leather in their 7 series in the 80s and that leather is still oh-so-damn supple today and looks bloody gorgeous, especially their cream leathers. I saw an old sharknose 7 series a while back. Dark green with cream leather. Would kill to drive one now.