Jakob Lenfers

This addon adds buttons below your posts (or somewhere else) to make it easy to get reactions to the post, but without the hassle of writing a whole comment. It makes it easier for the reader to interact with you. The buttons are configurable (how many, what text, position) and simply are counters to how often they were clicked. There is also a widget and a shortcode to show the top x posts with the most clicks for each button.
The idea is inspired by a <a href="http://bloggerindraft.blogspot.com/2008/08/new-feature-reactions.html" rel="nofollow ugc">blogger feature</a> and since it’s been my first addon, I borrowed the structure from <a href="https://wordpress.org/extend/plugins/sociable/" rel="ugc">sociable</a>.
<h3>Restrictions</h3>
<ul>
<li>When using plugins to cache the pages, the buttons won’t be up to date. They will increment through the javascript, but when the page reloads the old count will show again, until the cache is deleted. Check the FAQ on possibilities how to change that.</li>
</ul>

Reaction Buttons

Adds buttons for very simple and fast feedback to your post. Inspired by Blogger.

Automattic

The Crowdsignal Forms plugin allows you to create and manage polls right from within the block editor. 
Creating polls is as simple and as fast as writing a bullet point list. No embed blocks and no copy pasting needed anymore.
Customize the look and feel of your polls to match your brand, and pick your favorite color. The poll block supports the styling of your theme by default, and from there you can customize the styling of your polls the way you want.
With Crowdsignal’s results page you can view all responses as they come in. See the geo-locations of your voters and analyze IP addresses for any suspicious voting behavior. See advanced stats and analytics for understanding your audience.
Analyze your results and then export them in a number of different formats.
Set close dates for polls, create polls with single or multiple choice answers, choose whether to show your readers the poll results or keep them private.
You can create an unlimited number of polls with a free <a href="https://crowdsignal.com/" rel="nofollow ugc">Crowdsignal</a> account and your first 2,500 signals are free. A signal is a response you get to a poll. If you are on a free plan, you still have full access to the first 2,500 signals. Any further responses you collect will still be recorded but if you <a href="https://crowdsignal.com/pricing/" rel="nofollow ugc">upgrade</a> you will get access to our unlocked reports to see them. You’ll also get access to a <a href="https://crowdsignal.com/features/" rel="nofollow ugc">range of features</a> not available to free users.

Crowdsignal Forms

I'm still amazed on how much more traction a post can have by adding visitor interaction to it. Allowing your readers to have an opinion, learning from their answers and make better decisions relying on actual data. Priceless.

Surprisingly engaging

The Crowdsignal Forms plugin allows you to create and manage polls right from within the block editor.

Reaction Buttons vs Crowdsignal Forms