Instead of changing all the columns just add and remove the columns that you want.
add_filter( 'manage_edit-listing_columns', 'et_listing_edit_columns' );
function et_listing_edit_columns( $columns ) {
$columns['et_listing_type'] = __( 'Type', 'Explorable' );
$columns['et_listing_location'] = __( 'Location', 'Explorable' );
// You can remove columns with unset()
return $columns;
}