ynizon

With this plugin, you can add different adsense code. When you are in the content editor, you will have a $ button to insert the ad. The ad can be align on the right/left/center like a picture.
<h3>Arbitrary section 1</h3>

adsensebutton

Add a button for inserting Adsense code in your content

Thomas Maier

Advanced Ads

This plugin is an add-on for the also free <a href="https://wordpress.org/plugins/advanced-ads/" rel="ugc">Advanced Ads</a> ad management plugin. It extends the plugin with a placement to put Google AdSense In-feed ads in the loop between posts on your homepage, category pages, tag pages, or other archive pages, etc.
Google AdSense InFeed ads are a dedicated Google AdSense ad type to monetize such post lists pages with a highly engaging layout and specialized options.
Advanced Ads was developed to place, manage and test ads on pages to increase revenue and usability.
The plugin comes with plenty of features, e.g.,
<ul>
<li>Support for all Google AdSense types like link units, responsive, In-feed, In-article and matched content</li>
<li>Google AdSense term violation checks</li>
<li>Google AdSense Auto ads</li>
</ul>
<a href="https://wpadvancedads.com/features/" rel="nofollow ugc">Full feature list</a>
Advanced Ads Pro and other add-on features include
<ul>
<li>ads on AMP pages (all ads, not only Google AdSense ads)</li>
<li>ads based on specific browser widths</li>
<li>showing an alternative ad to ad block users</li>
<li>click fraud monitoring to protect your Google AdSense account</li>
<li>position tests</li>
<li>support for caching plugins</li>
</ul>

In-feed ads for Google AdSense

Display Google AdSense In-feed ads between posts.

adsensebutton vs In-feed ads for Google AdSense