Biggest Cities That Aren't World Capitals with Exceptions

Most of the biggest cities that aren't world capitals are in Asia or North America. Name those cities in other cotinents.
By urban area population according to citypopulation.de
Without Johannesburg, Istanbul and Ruhr Area
Quiz by KoljiVriVoda
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Last updated: November 14, 2016
First submittedNovember 14, 2016
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Population
City
21.8 mil
São Paulo
17.1 mil
Lagos
12.7 mil
Rio de Janeiro
5.4 mil
St. Petersburg
5.3 mil
Dar es Salaam
5.1 mil
Alexandria
5.1 mil
Milan
5.0 mil
Abidjan
4.9 mil
Belo Horizonte
4.9 mil
Sydney
Population
City
4.6 mil
Barcelona
4.4 mil
Melbourne
4.2 mil
Naples
4.1 mil
Casablanca
4.1 mil
Kano
4.0 mil
Porto Alegre
3.8 mil
Medellin
3.7 mil
Recife
3.6 mil
Salvador
3.5 mil
Fortaleza
+1
Level 81
Nov 14, 2016
What does citypopulation.de say the urban area population of Essen is?
+1
Level 73
Nov 14, 2016
Nothing, but there is Ruhr Area.
+1
Level 81
Mar 28, 2019
I was about to make this, but I guess I won't to avoid being redundant. However, if I had made it I think I would have just excluded India and China, and maybe the United States, too.
+1
Level 81
Mar 28, 2019
and why did you exclude Johannesburg? Does citpopulation group it with Pretoria?