Cateogory List with description and post count

cat_list_shortcode.php

<?php
add_shortcode('cat_listing', function($html){
    $categories = get_categories();
    $html = '';
    foreach( $categories as $category ) {
        $category_link = sprintf( 
            '<a href="%1$s" alt="%2$s">%3$s</a>',
            esc_url( get_category_link( $category->term_id ) ),
            esc_attr( $category->name ),
            esc_html( $category->name )
        );
        
        $html .=  '<h2>' . $category_link . '<sup>(' . $category->count . ')</sup></h2>';
        $html .=  '<p>' . $category->description . '</p>';
    }

    return $html;

});