Hello fellow makers,
Good resources are hard to find, before internet time it was because of their cost and unavailability, during internet era it is because of abundance of crappy info burying everything valuable underneath a pile of shit, hence digging is the way.
I learned to not fear getting my brains dirty while seeking reliable information, and while digging for other subjects I accidentally bumped into this website that lists various polymers and their uses, variations, copolymerizations and other additives together with a succinct description of the processes used to obtain them, and the processes the materials end up being used in, and at the end of each page there is the same group of links to the other polymers pages, total 18 polymers and their derivatives.
Enjoy it and (my take) save the text in PDF format on your hard drive, just in case.
https://www.team-mfg.com/blog/pa-plastic.html
Have fun.