The discrepancy between the "External Active User" counts and the number on the Quota Reports tells me that I need to make some query on the logs API to see a list of the active users contributing to my quota usage.
Auth0 Management API v2 I believe is the place I should be looking, however it’s not immediately obvious to me
1 - how to give it a date range
2 - which log event codes beyond the two mentioned in the above post will contribute to quota usage.
I’m going to have a crack at it using trial and error, but either a pre-baked query or even better something to click on the management interface would make my life a lot easier and probably save me from getting incorrect data and wasting time raising support tickets on bad data