Employee offboarding - find forms / documents that an employee owns

[aryknt]

I am making a checklist for Employee offboarding. Is there a powershell script or other methods to check what sort of documents / forms / flow/power bi reports  etc, an employee owns within O365.  We can't always ask the employee to transfer this. 

[#2]

Run an eDiscovery with the "author" keyword: https://learn.microsoft.com/en-us/microsoft-365/compliance/get-started-core-ediscovery?view=o365-wor...