jerrystewart99

An easy-to-use lightweight WordPress Plugin that can show the currently logged in user name or other metadata.
Replaces a target menu item with alternate txt which can also include usermeta. User metadata would typically include ‘first-name’, ‘last-name’, ‘nickname’ etc 
Any available usermeta may be used.
Optionally decorates the menu item with a user avatar. The avatar size is adjustable.
The target menu, the replacement text and the avatar are all set on the options menu which is found in [Settings|Logged In As]
Designed with the intention of being used in conjunction with a Membership plugin.
The website visitor must be logged in for this plugin to work
To date has been tested only with Ultimate Member and MemberPress membership plugins but others may work too

Logged In As

Tested now in Gutenberg theme but...

Show the currently logged in user name and avatar

Valeri Kluger

The IF Menu plugin adds a powerful yet simple feature to WordPress menus: conditional visibility.
This plugin lets you control whether a specific menu item is: 
* Shown to all visitors 
* Shown only to logged-in users 
* Shown only to logged-out users
<h3>Features</h3>
<ul>
<li>Simple and intuitive interface</li>
<li>Works seamlessly inside Appearance > Menus</li>
<li>Lightweight and secure — no external libraries</li>
<li>No performance impact or bloat</li>
<li>Developed by Valeri Kluger (vk-projekte.de)</li>
</ul>

IF Menu Visibility

Add login-based visibility control to WordPress menus. Show or hide menu items depending on whether users are logged in or not.

Logged In As vs IF Menu Visibility