Max Lynch

This plugin adds a simple <code>[icon]</code> shortcode for adding icons. For example, add the wonderful earth icon with <code>[icon name=ion-earth]</code>. You can 
also use this plugin with HTML like this: <code></code>
To add icons, use the shortcode in the editor or add the HTML right into your templates!

Ionicons Official

Add over 900 free and open source mobile, iOS, Android, and social media icons to your wordpress site with the only official Ionicons WordPress plugin …

Patrick Daly

Hybrid Byline is a plugin that adds a frontend interface to the Hybrid Settings page for users of the Hybrid theme to change the byline settings.
By default, the plugin reflects the existing byline settings that Hybrid uses. It gives you the ability to add categories or the number of comments to your post byline. You can add the author and date to pages as well. One extra 
addition is that you can choose to add <code>nofollow</code> to the post author link (a possible SEO benefit).

Hybrid Byline

Adds an interface to the Hybrid Settings page to change the byline settings.

Ionicons Official vs Hybrid Byline