byronj

Easy Content Adder allows you to add custom content via a native WordPress editor and display the content at the top or bottom of all posts, pages, or both.
All text, links, and media attachments can be added to the custom content. If you can add it to a WordPress Page or Post, it can be added via Easy Content Adder.
<h3>Features</h3>
<ul>
<li>Hide the content from all posts without having to delete your content or disable the plugin.</li>
<li>Choose which post types to display the content on.</li>
<li>Display the content only on posts that have been tagged with select categories or taxonomies. </li>
<li>Chose whether to display the content at the bottom and/or top of all posts.</li>
</ul>

Easy Content Adder

A WordPress plugin to easily add custom content to all of your Pages, Posts, and Custom Post Types.

netbiel

This plugin ads some extra options to your Customizer (like social icons), registers taxonomies and custom posts types for: 
– Portfolio items 
– Testimonials 
– FAQ 
– Team Members
This plugin doesn’t change how new post types are displayed in your theme. e.g You’ll need to add templates for archive-portfolio.php and single-portfolio.php if you want to customize the display of portfolio items. 
In the theme integrated with smartlib library you don’t need do anything

Smartlib Tools

Useful post types and customizer options.

Easy Content Adder vs Smartlib Tools