PhilBarker

<p>Allows you to paginate the standard wordpress gallery.<br />
Excellent for photographers wishing to use wordpress to show off their photos.</p>
<p>Please visit <a href="http://www.phil-barker.com/2011/04/wordpress-gallery-pagination-plugin/" title="Paginated Gallery" rel="nofollow ugc">the official website</a> for further details and the latest information on this plugin.</p>


Paginated Gallery

Allows you to paginate the standard wordpress gallery

Processby

<p>Loading paged content with Ajax. Works with standard WordPress pagination, WooCommerce pagination, plugins.<br />
<a href="https://processby.com/blog/" rel="nofollow ugc">Plugin demo</a></p>
<h4>Features</h4>
<ul>
<li>Ajax pagination;</li>
<li>“Load more” button;</li>
<li>“Load more” button and pagination;</li>
<li>Infinite Scroll;</li>
<li>Customisable styles.</li>
</ul>


WP Ajax Load More Pagination and Infinite Scroll

It is a great plugin. So much easy to use. It is also light. It saved me from hours of works. 
Thanks to the author. 
I hope author will keep it up to date and won't add unnecessary codes in the future.

Paginated Gallery vs WP Ajax Load More Pagination and Infinite Scroll