You might need to have a look at the Microsoft Graph permissions reference. If only Id is visible it might be due to the different Access scenarios on the Group resource.
As a best practice, request the least privileged permissions that your app needs in order to access data and function correctly. Requesting permissions with more than the necessary privileges is poor security practice, which may cause users to refrain from consenting and affect your app's usage.
The below article shows the permissions that an app needs to be able to perform specific operations required by the scenario. Note that in some cases the ability of the app to perform specific operations will depend on whether permission is an application or delegated permission.
https://learn.microsoft.com/en-us/graph/permissions-reference
Hope this resolves your Query!!
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