Regarding the previous topic, if you would like to display the display name (that the users prefer to) rather than the login name, you can.
1.Go to Plugins> Installed Plugins on the Admin Dashboard.
2.Look for this plugin and click Edit under it.
3.In the Edit textarea, look for “data->user_login” and replace it with “data->display_name”
4.Click Update File button
Optional : try “data->user_nicename” instead of “data->displayname” to see if it fits you need even more.