The current leader in this space that we use in the film industry (also heavily in games) is Gaea quadspinner.com it’s a node based erosion engine that lets you start with any height field, GIS, something you’ve sculpted, or even just a few shapes mashed together.

It’s waaaay beyond just layering a few noises together and is so much fun to use. Designed to be procedural, but also art directable, as we have to match artwork and reference of real world locations.

There’s probably some of the nodes that would benefit from being encoded in a ML framework, but not a single step to do it all.