The WorkControl-UserDirectory module can be used to display directory listing of portal users. The module allows to search for users by name, phone, etc.  The listing provides option to drill-down to user detail information.  You can configure the  listing to display all or just a subset of users by applying role restrictions. 

You can setup multiple instances of the module in the portal.  Each module instance can be configured with its own local settings.  Below is a screenshot with  explanation of the settings used in this demo.

Only users belong to the restricted roles will be displayed The "Show all user profile data" flag can be used to override the profile visibility settings such as for Admin or Members only