Add taxonomy tabs in admin panel to display all custom posts belonging to it

Hello,
As said in the tittle, I’m trying for a while now to get in the admin pannel a tab for taxonomy.
I have 5 custom post types (Ressources, Biographie, Recueils, Roman, Divers) and for each of them, a taxonomy “Auteurs”, and I want my client to be able to query all posts belonging to “Auteurs”.
Ex:
For “Auteurs” Adam Paul, I have 1 post in Ressources, 1 post in Biographie, 2 posts in “Romans”, and I would like to get them in the admin pannel to be able to modify all information at one regarding Adam Paul.
I was able to query them in front end ( https://www.tiwelle.com/visagevert/auteurs-2/ ), got a drop down fot each post type (see below) but I don’t know how to do it to get every post types together.
Any help ?
Thank you !
Manue

// registers each of the taxonomy filter drop downs
function sunrise_fbt_add_taxonomy_filters() {
    global $typenow;            // the current post type
    $taxonomies = get_taxonomies('','Auteurs');
    foreach($taxonomies as $taxName => $tax) {
    if(in_array($typenow,$tax->object_type) && $taxName != 'category' && $taxName != 'tags') {
            $terms = get_terms($taxName);
            if(count($terms) > 0) {
              //Check if hierarchical - if so build hierarchical drop-down
              if($tax->hierarchical) {
                $args = array(
                      'show_option_all'    => 'All '.$tax->labels->name,
                      'show_option_none'   => 'Select '.$tax->labels->name,
                      'show_count'         => 1,
                      'hide_empty'         => 0,
                      'echo'               => 1,
                      'hierarchical'       => 1,
                      'depth'              => 3,
                      'name'               => $tax->rewrite['slug'],
                      'id'                 => $tax->rewrite['slug'],
                      'class'              => 'postform',
                      'depth'              => 0,
                      'tab_index'          => 0,
                      'taxonomy'           => $taxName,
                      'hide_if_empty'      => false);
            $args['walker'] = new Walker_FilterByTaxonomy;
                wp_dropdown_categories($args);
              } else {
                    echo "<select name='".$tax->rewrite['slug']."' id='".$tax->rewrite['slug']."' class='postform'>";
                    echo "<option value=''>Show All ".$tax->labels->name."</option>";
                    foreach ($terms as $term) {
              echo '<option value="' . $term->slug . '"', $_GET[$taxName] == $term->slug ? ' selected="selected"' : '','>' . $term->name .' (' . $term->count .')</option>';
            }
                    echo "</select>";
                }
            }
    }
    }
}
add_action( 'restrict_manage_posts', 'sunrise_fbt_add_taxonomy_filters', 100 );

/**
 * Create HTML dropdown list of Categories.
 *
 * @package WordPress
 * @since 2.1.0
 * @uses Walker
 */
class Walker_FilterByTaxonomy extends Walker {
    var $tree_type = 'category';
    var $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
    function start_el(&$output, $category, $depth, $args) {
      $args['selected'] = get_query_var( $args['taxonomy'] );
        $pad = str_repeat('?', $depth * 3);

        $cat_name = apply_filters('list_cats', $category->name, $category);
        $output .= "\t<option class=\"level-$depth\" value=\"".$category->slug."\"";
        if ( $category->slug == $args['selected'] )
            $output .= ' selected="selected"';
        $output .= '>';
        $output .= $pad.$cat_name;
        if ( $args['show_count'] )
            $output .= '??('. $category->count .')';
        if ( $args['show_last_update'] ) {
            $format = 'Y-m-d';
            $output .= '??' . gmdate($format, $category->last_update_timestamp);
        }
        $output .= "</option>\n";
        }
}