Well ... (Yes, there are quite a few. I am very lazy to create them, and since I basically use them for use in industrial products, having metals of different finishes is enough for Arnold renderer ...)
Speaking of which, is there any standalone classifier with thumbnails?
In Cinema 4D I use this one, but I would like to have them all in a pdf ... Any clues? https://www.thegreatsummit.com/product/tgs-texture-manager/