Forget the Zoomers, let me introduce Generation Alpha.
During the early to mid-2010s, more babies were born to Christian mothers than those of any other religion in the world. That´s 33% of the world's babies compared to Muslims, whose share of the human population is 24%.

During the same period, the religiously unaffiliated (including atheists and agnostics) made up 16% of the population but gave birth to only 10% of the world's children. So they opted out of the future.

As people have been asking, this is the demographic/geographic breakdown you’ve been requesting.

More projections showing non religious are expected to lose even more ground as the century progresses. Muslims projected to pick up the pace.

Why are atheists and the non religious going extinct? Because this

This is interesting. Despite actual projections, people seem to be very confused about what’s going on. This is where the media comes in. Over 60% think the unaffiliated will increase in the future.