Add WordPress's html sitemap with Shortcode. Also exclude pages which having 'sitemap' word in the title.

Pages sitemap

<?php

/**
 * Create sitemap with shortcode
 */
function ans_sitemap($atts)
{
    // Get all pages
    $pages = get_pages();
    foreach ($pages as $page) {
        // Convert title in lowercase and make array of each word and check it 'sitemap' exits in the array 
        if (in_array('sitemap', explode(' ', strtolower($page->post_title)))) {
            // Prepare array of all page IDs, which have 'sitemap' word in the page title.
            $pages_to_exclude[] = $page->ID;
        }
    }

    echo '<h2 class="sitemap">Sitemap</h2>';
    echo '<ul>';
    wp_list_pages(array(
        'title_li' => false,
        'sort_column' => 'menu_order',
        'exclude' => implode(',', $pages_to_exclude)
    ));
    echo '</ul>';
}
add_shortcode('sitemap', 'ans_sitemap');