Hi Nick - sadly not that the moment. What I tend to do is use a calculated field on the previous object type that gives the name and then use that.
So like reports that need people (which I'm assuming you have here), I have on their custom form calculated fields that give me Home Team Name, Manager's Name, Role Name, etc.
On projects, I have Portfolio Name and Program Name.
You just go to the User Custom Form, add the calculated field, and the "formula" is Role.Name
Now, this only works for Primary Role, Home Team, but it has been helpful in charts and Matrix reports where you can't text mode groupings.