Add custom columns to Users listing table

After you add custom fields to users, you definitely need to show this new info in Users listing table.

function wcr_user_columns($defaults) {
    $defaults['type'] = __('User type');
    $defaults['age'] = __('Age');

    return $defaults;
}

function wcr_user_columns_values($value, $column_name, $id) {

    switch ($column_name) {
        case 'type':
            return get_the_author_meta('type', $id) ? : 'N/A';
            break;
        case 'age';
            return get_the_author_meta('age', $id) ? : 'N/A';
            break;
    }

}

// do the magic
add_filter('manage_users_columns', 'wcr_user_columns', 10, 1);
add_action('manage_users_custom_column', 'wcr_user_columns_values', 10, 3);