Woocommerce orders table columns

// Add new columns (or reorder columns)
add_filter( 'manage_edit-shop_order_columns', 'custom_shop_order_column', 20 );
function custom_shop_order_column($columns) {
    $reordered_columns = array();

    foreach( $columns as $key => $column){
        $reordered_columns[$key] = $column;
        if( $key ==  'column_id' ){ // column_id - id of the column after which you want to place the new column.
        // It can be an already existing column, then in this way you can change the order of the columns
            $reordered_columns['new_column_id'] = __( 'New Column Title','textdomain');
        }
        if( $key ==  'other_column_id' ){
            $reordered_columns['other_new_column_id'] = __( 'Other New Column Title','textdomain');
        }
    }
    return $reordered_columns;
}

// Add content for new columns
add_action( 'manage_shop_order_posts_custom_column' , 'custom_orders_list_column_content', 20, 2 );
function custom_orders_list_column_content( $column, $post_id ) {
    switch ( $column ) {
        case 'other_column_id' :
            $payment_method = get_post_meta( $post_id, '_payment_method', true ); // get peyment method for example
            if(!empty($payment_method))
                echo $payment_method
            break;
    }
}

Тут могла быть ваша реклама.