I've been putting together a collection from as many manufacturers and molds as I can and I'm noodling on how to describe the differences. My interim solution is:
Trad Clay = Paulson,
CPC/ASM/Burt/
BCC/
TRK?... (the older they get, the more I need to learn about these various companies)
China Clay = Eastony spirits, Majestic Card room and its ilk, etc... (chalkier texture perhaps)
Ceramic - Chipco, reluctantly TINAs (perhaps this'll be turned into "Home Ceramic" vs "Casino Ceramic" since BRPro had Chipco blanks for a while...
Casino Plastic - Matsui, Abbiati, Gemaco, Bud Jones, RT Plastics, etc
Home Plastic - Die slugs, most "clay" chips available on
Amazon
Plastic... indeterminate origin chips, where I'm not sure if they're more commercial grade or home-market oriented
Paper... got one compressed paper one! With a knight's helmet
Brass - some quirky home-market brass-core chips
"Home Composite" might be the right term for all the CASINO TOURNAMENT GRADE CLAY CHIPS on
Amazon/Alibaba. This could differentiate between the less slippery SlowPlay-type chips and the ABS plastic die slugs and plastic crinkle chips.
Whether Paulsons should be differentiated by date of manufacture is an interesting question. Leaded vs not, changing formula over time which even if a trade secret it may be possible to definitively show that chips from different eras are made of different materials (biggest inflection point being the ~2000 Mexico factory vs prior production?)