您可以这样做：

$args = array(
    \'post_type\'        => \'post_type_name\', // or use default if you use standard
    \'numberposts\'      => 3,  // or you can use 1 if you need only from last post.
    \'orderby\'          => \'date\', //by dates to get lastest
    \'order\'            => \'DESC\',
);

$posts = get_posts($args);
$recent_taxonomies = [];
foreach ($posts as $key => $post_data) {
    $recent_taxonomies[] = get_the_terms( $post_data->ID, \'custom_taxonomy_name\'); 
}

如果您想从此创建云标记，可以基于返回的对象和count 对于每个对象，然后基于它创建云。

为了简单地标记您可以使用的云（其中$name 是一个分类名称（它从整个分类中创建云）

function tagsCloudByTerm($name){
    $tags_out = null;
    $tax_terms = get_terms($name);
    $tags_out = \'<span class="tag-meta ">\';
    $tmp = [];
    $max = 0;
    if(!empty($tax_terms)):
        foreach ($tax_terms as $term) :
            if($max < $term->count){
                $max = $term->count;
            }
        endforeach;
        foreach ($tax_terms as $term) :
             $percent = floor(($term->count / $max) * 100);
             if ($percent < 20):
               $class = \'smallest\';
             elseif ($percent >= 20 and $percent < 40):
               $class = \'small\';
             elseif ($percent >= 40 and $percent < 60):
               $class = \'medium\';
             elseif ($percent >= 60 and $percent < 80):
               $class = \'large\';
             else:
             $class = \'largest\';
             endif;
            $term_link_url = get_term_link($term, $post_taxonomies[$tag_key]);
            $tmp[] = \'<a class="\'.$class.\'" href="\'.$term_link_url.\'" title="\'.$term->name.\'">\'.$term->name.\'</a>\';
        endforeach;
    endif;
    $tags_out .= implode(\', \', $tmp);
    unset($tmp);
    $tags_out = $tags_out.\'</span>\';
    return $tags_out ;
}

您可以使用以下代码：

 add_shortcode(\'get_latest_taxonomy\', \'get_latest_taxonomy\');
        function get_latest_taxonomy()
        {
            global $wpdb;
            $args = array(\'post_type\'=>\'POST_TYPE_NAME\',\'posts_per_page\'=>-1);
            $result =  get_posts($args);
            $cat_name = array();
            foreach ($result as $key => $value) {
                $ids = $value->ID;
                $cate = get_the_terms($ids, \'YOUR_TAXONOMY_NAME\');
                foreach ($cate as $k => $v) {
                    $cat_name[] = $v->name;
                }
            }
            $latest_cate = array_unique($cat_name);
            echo "<ul>";
            foreach ($latest_cate as $latest_cate_key => $latest_cate_value) {
                echo "<li>";
                print_r($latest_cate_value);
                echo "</li>";
            }
            echo "</ul>";
        }