theode

With the use of shortcodes it is possible to react to the content by emojis. 
So you install the plugin and create new emoji with a title an emoji itself, a count field and an initial count, to fake the initial value of the clicked emoji. 
The shortcake is [emojized id=“8” count=“true”] (or false or empty)
In the new version you can limit votes to one per user.
This plugin demands WP REST API plugin.
It has the same approach as the plugin “Emoji Reactions” 
https://wordpress.org/plugins/emoji-reactions/ 
but that seems to be discontinued.
https://www.youtube.com/watch?v=VaNw_Xh35NM
So have fun with emojis.

Emojized

Emojized allows visitors to a WordPress site to rate and react to content using Emojis. Because text without them is  🅱🅾®ℹ️🆖

hamidxazad

Post Page Reaction is a WordPress plugin developed by Hamid Azad that enables users to react to posts or pages. With this plugin, you can add a reaction feature to your content, allowing visitors to express their feelings about your posts or pages.
<h3>Key Features</h3>
User Reactions: Allow users to react to your posts or pages with various emotions. 
Easy Installation: The plugin is easy to install and activate with a straightforward setup process. 
Shortcode Support: Use a shortcode to embed the reaction feature wherever you want within your content. 
AJAX Support: Utilizes AJAX for seamless and dynamic reaction saving and counting.

Post Page Reaction

Enable users to react to posts or pages with various emotions using an easy-to-use shortcode with AJAX support.

Emojized vs Post Page Reaction