In 2021 Microsoft implemented “Sites.Selected” Graph API permissions to allow application access (without a signed in user) to specific sites (entire site only). In 2024 Microsoft implemented granular access – to specific list/libraries, as well as to specific documents/files and list items. Now name convention is *.SelectedOperations.Selected.
Permissions come in two flavors – delegated and application:

• Files.SelectedOperations.Selected – Allow the application to access a subset of files (files explicitly permissioned to the application). The specific files and the permissions granted will be configured in SharePoint Online or OneDrive.
• ListItems.SelectedOperations.Selected – Allow the application to access a subset of lists. The specific lists and the permissions granted will be configured in SharePoint Online.
• Lists.SelectedOperations.Selected – Allow the application to access a subset of lists. The specific lists and the permissions granted will be configured in SharePoint Online.