Is there a way to include the Instance Group Name in a report?

Does anyone know if there is a way to include the Instance Group Name as a column in a report? 

I tried:   instance.group     /    ##INSTANCEGROUP##   /   system.deviceGroupId

but none of these worked. 

So under any DS you can add an Instance Group and I need to include that Group Name in the inventory report. Its not listed as a property on the Instances INFO page. 

Thanks,