gokulakrishnan

This plugin provides Support mobile optimized content for posts that can load instantly everywhere.
With the plugin active, all posts on your site will have dynamically add the support for AMP <code>/postamp/</code> to the end your post URLs. For example, if your post URL is <code>http://example.com/2018/01/26/helloword/</code>, you can access the AMP version at <code>http://example.com/2018/01/26/helloword/postamp</code>, and you can access through <code>http://example.com/?p=3&postamp=1</code>
Note : this plugin only creates AMP content but does not automatically display but only availabe on Google Search.
Note : Simplified AMP Page which anyone can use / change the code with minimal knowledge

POST AMP

Enable Accelerated Mobile Pages (AMP) for only POSTS on your WordPress site.

apricoton

AMP helper for WordPress
More information : https://github.com/apricoton/wp-amp-helper

POST AMP vs WP AMP Helper