Considering the below data point,
Only apps that have no user permissions or sign ins
No Azure owner
NOT caring about status of office.com/apps since these apps don't have the dynamic groups
Not worrying about application permissions
The biggest concern is that some of these apps may be services/APIs and default apps provided (since there is a number of them with Microsoft as the publisher.
I have found list of apps. If there any other reason that I should not delete these apps?
Please help to analysis