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🆖

Henrique Silverio

<h4>Comments Reactions</h4>
Emojis. Who does not like them?
Engage your users providing more interactive comments with emoji reactions!
Logged users can react to comments.
Visitants can view summary of comments reactions.
<ul>
<li>Just “plug and play”.</li>
<li>High quality SVG icons. (Thanks to <a href="https://dribbble.com/shots/2283376-Facebook-Emoji-Freebies" rel="nofollow ugc">Tobia Crivellari</a>).</li>
<li>Smooth CSS animations.</li>
<li>Ajax interactions.</li>
</ul>
<h4>Contributing</h4>
You can contribute with this plugin development by:
<ul>
<li>Reporting issues <a href="https://github.com/HenriqueSilverio/comments-reactions/issues" rel="nofollow ugc">here</a>.</li>
<li>Solving bugs, with <a href="https://github.com/HenriqueSilverio/comments-reactions/pulls" rel="nofollow ugc">pull requests</a>.</li>
<li><a href="https://pag.ae/bhdkncn" rel="nofollow ugc">Donating</a> any amount to help me drink some coffee.</li>
</ul>

Comments Reactions

Improve your comment system with funny emoji reactions.

Emojized vs Comments Reactions