File and Folder events displays information about the list of file events that has occurred in your SharePoint Online sites like recent file check-in and check-outs, recently copied / moved files, recently downloaded / uploaded files, recently accessed / modified files, and top users who have performed file activities recently.
Sharing and Access Request activities display event information about the created / accepted access requests to access the SharePoint Online sites, created / accepted Sharing invitations, created / used anonymous links etc.
Site Administration reports display event information about the recently created / deleted / updated groups, added site collection administrator access, created site collections, modified site permissions, recently added / removed users from a SharePoint group etc.
Exchange Mailbox reports display event information about user sign-in events, mails sent using the Send As and Send on behalf permissions etc.
User Administration reports display event information about recently added / deleted users from tenant, recent password and license changes, user login activity, failed login activity, user account locked activity due to multiple failed logins etc.
Group Administration reports display event information about recently added / removed groups, recently added / removed members from groups etc.
Role Administration reports display event information about recent changes to Roles like adding / removing roles for a user etc.