Owned Users are influencers and other user accounts that have interacted with your channel. These are users that you've imported (by uploading a CSV or TSV file) or users that signed up through your branded Influencer Hub.
To view your Owned Users, visit the Users dashboard and click the magnifying glass icon in the top right corner of the table to view the filtering options. In the "Filter by" section, click the List dropdown and select the list titled "Owned Creators Only":
You can view your owned users in this same way from any the different user tables that are present in the dashboard, on pages like My Creators or Discover (both located in the top-level Users menu).