Maybe this is old news to some but as far as the associations of the doctrine of signatures go, I recently found a list of all correspondences between plants and planets, according to Paracelsus; it is rather tedious to translate here, and I haven't found it on the Internet yet but if anyone wants it I'll type it out. It gives planetary associations for about 140 plants.
The idea would be to then construct three separate datasets:- (1) the range of plants thought to have pharmaceutical effect *by anybody* (2) the best matches to those within the VMS (3) the range of plants that were apparently *excluded* from the VMS