I have suspected UNESCO would have an equivalent of a "world canon" list somewhere ... today I finally found it: called UNESCO Catalogue of Representative Works - works funded by UNESCO to get translated. Program started from 1948 till 2005 I've read. I have not studied the list yet (>1000 titles), but here is the url:
Blank search will give the full list - for now, I would go through country by country (e.g. India or China) and see how the list maps with what I know.