Hi @Anthony Petracca ,
Thanks for your reply!
According to the screenshot you provided, looks like you have created a Microsoft 365 Group. To delete it, please contact your administrator and log in to https://admin.microsoft.com/adminportal/home?#/groups, as shown in the below image. You can find the group you created via Teams & Groups > Active teams & groups > Teams & Microsoft 365 groups.
Then click the three dots icon and click Delete group.
Based on the above, please restart Outlook and you will find that the group will not appear.
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