Hi @AT ,
To list all Teams in an organization, use GET /teams
Graph API endpoint with delegated permission Team.ReadBasic.All (which doesn't require admin consent). Refer teams-list for more details.
Note: APIs under the /beta version in Microsoft Graph are subject to change. Use of these APIs in production applications is not supported
If the answer is helpful, please click Accept Answer and kindly upvote it. If you have any further questions about this answer, please click Comment.