Django Admin Column Adjustments

I need a straightforward tweak to my existing Django admin panel. Right now, the list view is missing key user details, so I’d like a developer to add a few new columns that display user-related data (for example, username and Contact no ) directly in the admin changelist.

Scope is intentionally small:
• Identify the relevant model(s) and admin classes.
• Add the additional user data fields as list_display entries so they appear as new columns.
• Ensure the columns sort correctly and respect existing admin filters.
• Keep the current styling and permissions intact—no other layout or UX changes are required.

The codebase is running on Django 4.x with standard ModelAdmin classes; no third-party admin themes are involved. A concise pull request or diff with clear comments is all I need to review and merge.