The key is "databricks.catalog", but it didn't solved my problem with the geometry either. It only works for WKT (but, don't quote me on this 😉 I heard that Databricks may be working on a geometry type that could be native (we have geometry as a UDT and use Sedona).

Also, I have probably 30 tables in my schema (not that much) with millions of row (again, not billions) and yesterday it analyzed the schema for hours (the objects being greyed and unselectionable) before being able to add them to QGIS.