>>509334211East Asians (Japan and Korea) would rise to power mainly if they can solve their reproduction issue.
Africa Collapses for the most part. Only a handful of countries would survive as there is 1 that is self sufficient when it comes to food (Tanzania) and others are actively working towards it as those countries finally realize that being dependent on other countries for food is a bad thing.
The Eastern Slavs would start to collapse as they are 100% reliant on the west for any form of technological progress.
India would collapse without the west
China would collapse without the west.
Middle east goes back to fighting each other as their unifying enemy is now gone.
If you don't count Argentina/Chile as being white they would also be a contender but behind Japan and Korea.
So it would kind of be a toss up between, Japan/Korea/Argentina/Chile.