Not all inclusive, but if you look at the photos you can start to see some that are "standard" and shouldn't appear on real chips.

There are 1-2-3 colors, large inserts, any mold.

There was a question about Pyramid Casino, and the only two examples I have, match the general color scheme of fantasy chips, my guess would be, they are just that. The casino de ithmus city is an old store chip, one of the early designs. (aka James Bond movie chips) Look at the colors.