The
New York Times recently ran an article about fungal leather. See: That Mushroom Motorcycle Jacket Will Never Go Out of Style
Also of interest may be:
https://www.vrg.org/links/LeatherAndClothingAlternatives.htm
https://www.vrg.org/nutshell/leather.htm
https://www.vrg.org/blog/2020/06/18/how-sustainable-is-vegan-leather/