When using Google+ in your organization, users can recognize other profiles from your organization by small profile labels that indicate a G Suite user's domain. This allows users to distinguish profiles inside your domain from profiles outside your domain. The labels for your domain are confidential and will only be seen by other users in your domain.
The small domain listed on the profile helps the user who is sharing content choose the correct profile.
Similarly, if a user on a desktop device hovers the cursor over the name or photo of another user in your organization (for example, while posting in the Google+ stream), the "hovercard" displayed will show your domain beneath the user's name.
In a Google+ profile, the user's domain is listed to the right of the user's name, (or beneath the user's name on a mobile device). The profile owner will always see the domain label on their profile. Other people viewing the profile will see the label only if they are in the same domain.
On the desktop, domain labels also appear on profile cards in the Google+ People section and in Google+ search results.
If you hide or include a user from the G Suite Directory, there might be a delay of up to a few hours before the label visibility is corrected for that user.