I have some reports published from Power BI Desktop and others linked directly from SharePoint, via "Get Data" in Power BI Service:
Is there a way to tell whether any report is published from Desktop or directly from SharePoint?
yes, ask your Tenant Admin to help you with the extract of the respective audit log. (assuming you are on Premium)
Watch the playback when Priya Sathy and Charles Webb discuss Datamarts! Kelly also shares Power BI Community updates.