Based on https://www.worldometers.info/world-population/population-by-country/

#1 in Africa is world #7 — Nigeria
#1 in latam is world #6 — Brazil

Only 14 nations exceed 100M .. 3 African….. 2 Latam (BRZ, MEX) …… 1 European (#9 Russia) …… 1 NA (US).
Among the remaining 7 (all Asian) countries .. 3 Indian [2], 2 east Asian, 2 S.E.Asian (Indonesia, Philippines [1])

[1] Vietnam is projected to break into the club soon as world #15.
[2] #2 India + #5 Pakistan + #8 Bangladesh together is 22% higher than China.

— population growth rates:
China is slower than US, Brazil,,,, and soon to shrink.
— migration rates:
India “drains” faster than China.
World #1 recipient is U.S. but I think each government has its own counting criteria.
— density ranking worldwide:
#3 SG
#4 HK

India is 3x China.

Japan is lower density than India, Bangladesh, Philippines !

— statistical accuracy .. is probably better in rate of change vis-a-vis current population snapshot.