Permission/User Overview/matrix

I searched a bit and before I get my hands on some code, i would like to ask you guys.

Is there any app/code/… to visualize the Users and their groups in a pivot/matrix (y-axis users and x-axis groups) style overview?

And is there a way to get the same with the shares (like y-axis Shares and x-Axis users/groups)?

Perhaps Analytics

Or a monitoring service such as Matomo.