Usar o filterizr com taxonomia. Este código você pode usar como uma galeria de fotos com filtragem / categoria.

filterizr.js

/*
	javascript
	tem que incluir esse arquivo js: https://cdn.rawgit.com/giotiskl/Filterizr/1.3.4/dist/jquery.filterizr.min.js
*/

window.jQuery(function ($) {

  var $filterizd = $('.projects-gallery .items').filterizr({
		filter: 'all',
	  layout: 'sameSize',
	});
  
  $('.projects-gallery .filters button').on('click', function () {
    $('.projects-gallery .filters button').removeClass('active');
    $(this).addClass('active');
  });
 
});

filterizr.php

<?php
// adiciona no functions php
// e usa shortcode [show_projects] para mostrar na página
add_shortcode( 'show_projects', function () {
	$taxonomy = 'post_tag';
	$post_type = 'post';
	
	$posts = get_posts( [
		'post_type' => $post_type
	] );
	$terms = get_terms( $taxonomy );
	ob_start();
	?>
	
		<div class="projects-gallery">
			<div class="filters">
				<button data-filter="all" class="active">Todos</button>
				<?php foreach( $terms as $term ) : ?>
				<button data-filter="<?php echo $term->term_id; ?>"><?php echo $term->name; ?></button>
				<?php endforeach; ?>
			</div>
					
			<div class="items">
				
				<?php foreach ( $posts as $post ) : setup_postdata( $post ); ?>
				<?php
					$terms = wp_get_post_terms( $post->ID, $taxonomy );
					$term_ids = [];
					foreach( $terms as $term ) {
						$term_ids[] = $term->term_id;
					}
				?>
				<div class="filtr-item project" data-category="<?php echo implode(',', $term_ids); ?>">
					
					<!-- conteudo de cada projeto aqui -->
					<h2><?php echo $post->post_title; ?></h2>
				
				</div>
				<?php endforeach; wp_reset_postdata(); ?>
			</div>
	
		</div>
	<?php
	return ob_get_clean();
} );