No.macos.safari -

The report is designed to show how Safari’s is working. It lists:

If you want to adjust how Safari handles these privacy settings: no.macos.safari

The total number of trackers Safari blocked from following you across websites. The report is designed to show how Safari’s is working

The specific tracking entity (e.g., a data or advertising company) that was most active across the sites you visited. Managing the Privacy Report no.macos.safari

Click the Shield icon (Privacy Report) to the left of the smart search field to see a snapshot of trackers blocked on the specific page you are visiting.

You can click Manage Website Data in the Privacy tab to manually remove cookies and tracking data from specific sites. Safari Privacy - Apple