Why is this quiz not featured? It definitely has enough cities with a population over 1 million. Is it because of the many (to the west) unknown Chinese and Indian cities? If that's the case, it is very West-centric. These cities are the size of known cities like Auckland, Cordoba, Tbilisi, Belgrade, Calgary, Nur-Sultan (source: https://en.wikipedia.org/wiki/List_of_largest_cities#External_links)
This comment completely ignores the fact that most of these Chinese and Indian cities wouldn’t even make the top 20 largest cities in their country while all of the cities you listed are in the top 10 largest cities in their country. None of theses cities have near the economic or cultural significance of the cities you listed anyway.