Your shared design looks impressive. I have some suggestions to make the design more intuitive.
1. It's a nice idea to place the sorting button for all columns.
2. Instead of performing actions across multiple windows, we can place a single button in each row, allowing users to complete all activities in a single place with a single click. This makes the design smarter and more attractive.
3. Can we include the search icon inside the left side of search field
I've been working on making the user management open in a tab instead of a dialog for better user UX. The new design looks like below. Please note, once we start working on permissions (RBAC) we will add sub tabs - Roles and Permissions.
Please let me know if we need to change anything in this or any questions.