You can see information only for columns for which you have some privilege.
RESOURCE_GROUPS table has these
The name of the resource group.
The resource group type, either
Whether the resource group is enabled (1) or disabled (0);
The CPU affinity; that is, the set of virtual CPUs that the resource group can use. The value is a list of comma-separated CPU numbers or ranges.
The priority for threads assigned to the resource group. The priority ranges from -20 (highest priority) to 19 (lowest priority). System resource groups have a priority that ranges from -20 to 0. User resource groups have a priority that ranges from 0 to 19.