afzal_du

This plugin adds a new button into your WordPress page/post editor which allows you to insert Lorem Ipsum (demo text) quickly. 
It’s useful for creating demo content.
Check the video 
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/m4PIEJednNo?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>

Srizon Lorem

Lorem Ipsum (Demo Text or Dummy Text) generator for your WordPress editor.

deenison

Lorem User Generator uses <a href="https://randomuser.me" rel="nofollow ugc">randomuser.me</a> API to generate as many random user data as you want to your WordPress for application testing. 
It’s like Lorem Ipsum, but for users.

Lorem User Generator

This plugin is helping us a lot to generate dummy users for tests.

Great and simple. Just works

Ideal plugin for testing environment. Hasn't been updated in a while, but works flawlessly still on WordPress 5.1 and PHP 7.2.

Works perfectly still

Like Lorem Ipsum, but for users. A straightforward way to add randomly generated users to your WordPress.

Srizon Lorem vs Lorem User Generator