There should be an added element on the value list views to show which items are shared. It could appear like a simple tag “Org: XYZ” with a color associated to that Org.
Example tag UI appearance: https://www.jqueryscript.net/images/Simple-Mobile-Friendly-jQuery-Tags-Input-Plugin-Taxonomy.jpg
Similar request but for folders is here: UI Element added for folder assignments (much like tags)