I had no idea it was so common! Fascinating article, thanks for posting it.

And then there is this kind of chimerism, where a woman found she is the genetic aunt of her children:

https://en.wikipedia.org/wiki/Lydia_Fairchild

This is often cited in catholic and orthodox circles to bolster the marian doctrines, as it entails the virgin mary had cells from Jesus in her body for the rest of her life.