Hi @talford ,
there is a Pre-Computed query (PCQ) which gets you what you want. However it will not include a log if there are no events received.
If you navigate to Dashboards, either create a new Dashboard or add a Card to an existing one, then when building the card, select the Pre-Computed Query tab
Then Search for ‘Usage’ and you should see this
This query will return a table view of each log source and how many bytes were received.
David