So the interactive map should do this workflow for you. You place points and it will run the knn classifier over the landscape for you.
If you want to go further you can export the GeoJSON and then run it through any machine learning pipeline you like.
...and if you do build this @ensocode, feel free to open a PR to https://github.com/ucam-eo/geotessera and I'll incorporate it as an example in the repo.