In Pages App sorting:

ACs

• The default view mode is tree view or search results view (list view) if the user is already using other search features like the search bar or filters.
• If in the Tree view, once the user sorts a column content, the table content will automatically change to the search results view (list view) 
• All columns in the table are sortable – one at a time.
• When the user clicks the sorting icon:
  • On the first click, the content will be organized from A to Z (Ascending, arrow up)
  • On the second click, the content will be organized from Z to A (Descending, arrow down)
  • On the third click the table content goes back to default sorting – tree view or user ranking results (list view)

Tech notes:

• The sorting behavior includes now 3 clicks instead of 2:
  1# ascending
  2# descending
  3# clears out the sorting back to the default
• A hovering state gets added to the sortable column headers  

Design:

Screens mockup
Components