lol, not studied yet:
http://paulbourke.net/papers/joc2013/paper.pdf

Simplex noise patent anticipated expiration is 2022-01-08.

This link looks interesting, but have no time to study it.
(grasshopper, anemone recursion mentioned...)
https://discourse.mcneel.com/t/subdivide-given-area-into-randomly-sized-blocks-with-no-gaps/58003/15

-Brian