WordPress Monsters

You can create templates (layout) for your pages to add some blocks of content before/after general content.
Also you can assign your template to custom post type(archive or single), taxonomies, 404 and search results pages, this options can be found in Templates->Settings menu in admin console.
You should use
<pre><code>[wpm-template-content]
</code></pre>
shortcode in this templates to separate content.
Watch how to use Template Manager plugin in this cute short video:
<iframe loading="lazy" title="Template Manager by WordPress Monsters" width="750" height="422" src="https://www.youtube.com/embed/jY2T-ZuUfSE?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>

Template Manager by WordPress Monsters

This is a temlate manager plugin for easy WordPress development from scratch when you are use Page Builders plugins.

twinpictures

Baden

Column-Matic easily inserts columns into posts and pages by wrapping content with a snappy shortcode. Useful for sites with a magazine or newspaper style layout, Column-Matic shortcode wraps content in cozy columns. Content can also be separated so that text and images are displayed on opposite sides of a post or page. Visit the <a href='http://plugins.twinpictures.de/plugins/column-matic/documentation/' rel="nofollow ugc">Twinpictures Plugin Oven | Colum-Matic | Documentation</a> for a complete listing of shortcode options, even a few examples that might delight and even inform. <a href='https://wordpress.org/support/plugin/column-matic' rel="ugc">Free Community Support</a> is available.

Column-Matic

Column-Matic adds a shortcode that wraps post/page content up in cozy columns. Useful for magazine or newspaper style layouts.

Template Manager by WordPress Monsters vs Column-Matic