Here in Belgium I am working for a company (Puratos) that is selling ingredients for bakers Bakers, pastry chefs, chocolatiers, worldwide.
Besides, we maintain a sourdough library that contains samples from everywhere in the world. I had meetings a few times in that place, quite impressive.
https://sourdoughlibrary.puratos.com/en/virtual-sourdough-library
I just tried getting on the sourdoughlibrary.puratos.com site you posted above, twice.
Waited for it to load but when it was done the page became unresponsive both times.
Would have liked to see what they have.