Map of World Megaregions/Megalopolises?

I'm just asking, where can I find a large and comprehensive map of all the world's Megaregions or Megalopolises? I need it as reference material.

i got that one from here:

T seems very selective. No Jakarta. No Lagos. No Wuhan or other internal cities.
It's the closest map I found about global megaregion, I admit it seem very sparse but if you could find a better one it could be nice to share, or maybe a collection of regional megametropolis maps
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