Getting email account from Office 365 Ipads

New Contributor III

Right we have around 25 Ipads for one department that were all signed out by 1 department Head.
Now all of the Ipads are being used by staff/students and most are using Teams and the Office365 apps.
This means they will be logged into theese services with their college account.
Is their any way to get this infomation off the Ipads? At this time most are externally but we have a jss in the DMZ thats reporting fine and sending MDM commands fine.
It would just be nice to see who is activaly using 365 credentals on the ipads.
We dont use LDAP on the ipads all are named DEPARTMENT-IPAD01 etc.

Cheers for any help