Is it possible to view aggregate credit consumption data for all usage types in tabular format?

Answer

No, it is not possible to view the size of all published feature services or the credits these feature services consume in a tabular form in ArcGIS Online for Organizations.

However, the ArcGIS Online for Organizations account administrator may view the credit consumption for each of the service types from the ‘View Status’ page in the My Organization tab. Users may also view the size of individual feature services from the Properties page.

See the Esri blog Tips for managing credits consumed by analysis tools for help in estimating the credit usage.