I think it won't be possible to display such data, and here's why.
To create such a report using 3 data sources: Contacts, Deals, and Activities.
For the correct display, you should choose either Contact Owner, Activity Assigned to, or Deal Owner (for example, X-axis).
For the Y-axis is fine to have the Number of activities, Number of Contacts, Number of Deals
So the data will not be shown, because there will be a mess. Though, if somehow we would have a User ID for all the objects, for X-axis, then it would be possible to check all the objects, I guess, but as I know, we don't have this option in HubSpot.