Vast HTML

This will allow you to display exacly how many users total are on your blog.
For more information on the plugin visit: http://vasthtml.com/js/total-users-plugin/

Total Users

shows how many user are on your Wordpress blog.

Ipstenu (Mika Epstein)

This plugin adds a new, sortable, column to the users lists, which shows the date and time they registered.
Primarily useful for single site (which doesn’t show this at all), on Multisite Networks it adds the user’s registration info for all individual sites.
<ul>
<li><a href="https://ko-fi.com/A236CEN/" rel="nofollow ugc">Donate</a></li>
<li><a href="http://halfelf.org/plugins/recently-registered/" rel="nofollow ugc">Plugin Site</a></li>
</ul>
<h3>Privacy Notes</h3>
This plugin does not track any additional data other than what WordPress natively collects upon registration. It just makes the data visble.

Recently Registered

Does what it says! It add new column in the user's dashboard!
You can also sort the users by registered date and that is very usefull

Useful. Works great, as I want

Add a sortable column to the users list to show registration date.

Total Users vs Recently Registered