You question is very interesting. Visual language doesn't need to be translated. This made me think of another internationally understood language, which is music. If we consider pop music, it could be seen as a "common, global taste" ruled by the market. It is a "style that sells". But the more time passes by, and the more "pop" acquires different meanings, and takes inspiration from other styles which were not popular. So, individual and national "styles" earn their voice. It is less and less "western", and more and more contaminated and various.
There is something that I wonder: has music been explored more that graphic design? Is it simply more developed? Graphic design could be a "pop version" of visual arts, such as painting. Graphic design is used in advertising, and generally to sell, so it has a much more western connotation. Visual arts are the mirror of people and countries, they are more free.
I wonder if graphic design, just like music, will get more and more rich and diversified in the future, getting closer to pure art.