Scott Kingsley Clark

Pretty easy setup.. just install and activate it on the site of your choice (or network activate) and set up the settings however you’d like.
This plugin supports both Per-Site and Per-Network (WordPress Multisite) settings, so you can fine tune your options based on your needs.
Other plugins you might be interested in:
<ul>
<li>Showing the Admin Bar in more cases – <a href="https://wordpress.org/plugins/always-show-admin-bar/" rel="ugc">Always Show Admin Bar plugin</a></li>
<li>Showing the Admin Bar to logged out users – <a href="https://wordpress.org/plugins/logged-out-admin-bar/" rel="ugc">Logged Out Admin Bar plugin</a></li>
<li>Customizing the Admin area based on role – <a href="https://wordpress.org/plugins/adminimize/" rel="ugc">Adminimize</a></li>
</ul>

Admin Bar Disabler

Pretty easy setup.. just install and activate it on the site of your choice (or network activate) and set up the settings however you'd like.

Benjamin Denis

WP Admin UI allow you to customize, optimize and manage:
<ul>
<li>Login screen: custom logo, custom background image, custom css, redirect users to a specific url after logout, disable login by email for users…</li>
<li>Global settings: custom admin styles, remove WordPress version/credits in footer, custom favicon, remove help tab, remove screen options tab, disable all WordPress notifications updates, define default view mode in view list, block WordPress admin for specific roles…</li>
<li>Dashboard: remove unwanted dashboard widgets, add your own custom widget, disable drag’n’drop widgets…</li>
<li>Admin menu: remove menus/submenus, rename menus/submenus, reorder them with drag and drop like a navigation menu…</li>
<li>Admin bar: remove unwanted items in admin bar, disable admin bar in front-end…</li>
<li>Editor: enable full tinyMCE by default, add buttons, disable WP formatting shortcuts, set a default image alignment, default image size…</li>
<li>Media library: define JPG image quality, add EXIF column, URL column, filters…</li>
<li>User Profil: 8 additionals color schemes…</li>
<li>…</li>
</ul>
Import / Export settings 
You manage dozens of websites? Avoid reconfigure everything, thanks to our import / export tool.
Role Manager 
Apply each setting to specific roles for maximum customization.
<blockquote>
<h3>WP Admin UI : PRO version</h3>
Need more features? Try WP Admin UI Pro right now!
<ul>
<li>Metaboxes: remove unwanted metaboxes in custom post type, pages and posts…</li>
<li>Columns: remove unwanted columns in view posts, pages and custom post types list…</li>
<li>Third plugins: remove WP SEO ads, WPML ads, Gravity Forms, Akismet, WooThemes…</li>
<li>Themes: build your own custom admin theme without code</li>
<li>Mails: manage WP Mails, use SMTP, change From and Name, add CC, BCC, return path…</li>
<li>WooCommerce: customize WooCommerce backend, remove product data like type, tabs…</li>
<li>and new pro features soon…</li>
</ul>
<a href="https://wpadminui.net/" rel="nofollow ugc">Check out our +150 options</a> 

</blockquote>
<iframe loading="lazy" class="youtube-player" width="640" height="360" src="https://www.youtube.com/embed/2oHeaDLzVDw?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>
<h3>Translation</h3>
<ul>
<li>English</li>
<li>French</li>
<li><a href="https://www.wpadminui.net/contact-us/" rel="nofollow ugc">Add yours!</a>
</li>
</ul>

WP Admin UI

This plugin has all the features that ever need for a wordpress white label.
Best work by the developer.
Please keep it updated, after wordpress 5.o
Thank You

Very Nice Plugin

WP Admin UI is a powerful plugin to customize almost everything in WordPress administration in just few clicks for specific roles.

Admin Bar Disabler vs WP Admin UI