List all of the world's cities that you would define as "world class"?

Question

List all of the world's cities that you would define as "world class"?

Answer 1

Population: 1) Mumbai 2) Karachi 3) Istanbul

GDP: 1) Tokyo 2) New York CIty 3) LA

Answer 2

List of cities proper by population

1 Mumbai  2 Karachi 3 Istanbul

List of cities by GDP

1 Tokyo 2 NY 3 LA

Answer 3

1- London, Ky.

2- Athens, Ga.

3- Havana, Fl.

4- Cairo, Ga.

     " world class" names for real southern towns