There are some countries that are missing, such as Hong Kong, Taiwan, and others that weren't listed in the nationality sections for actors.
Apparently, it seems like myCast somehow merged certain countries into one. For example, Hong Kong and presumably Taiwan was merged with China (I saw it with the Jackie Chan actor profile, for example. Jackie Chan is Hong Kong).
Or maybe I'm quite mistaken?
It used to have so many countries. Almost every nationality in the world was represented. But now, certain countries don't exist like the Dominican Republic, Taiwan, Hong Kong, etc.
Anyways, I really hope this gets fixed, because I had trouble looking for Hong Kong and Taiwanese actors bcuz they're probably grouped in along with the Chinese actors.