The process of building custom applications and tools that interact with Microsoft SharePoint, including SharePoint Online in Microsoft 365.
Hi @Dave Nicodemus ,
Currently, you cannot use Graph API to achieve this. According to the documentation, when we use graph api to search person, the source is Exchange Online not SharePoint. So you would not get results.
You could submit the feature request here: https://techcommunity.microsoft.com/t5/microsoft-365-developer-platform/idb-p/Microsoft365DeveloperPlatform