Reorder custom submenu item

In the Settings menu, I have the following menu items listed:

Settings
-- General
-- Writing
-- Reading
-- Discussion
-- Media
-- Permalinks
-- Blogging

I’d like to the Blogging (options-general.php?page=blogging) reordered underneath General instead of being at the bottom. This was added with the add_options_page() function.

From doing some research, this is what I’ve come up with:

add_filter( 'custom_menu_order', array( $this, 'submenu_order' ) );
function submenu_order( $menu_order ) {
    global $submenu;
    $order = array();
    $order[] = $submenu['options-general.php'][10];
    $order[] = $submenu['options-general.php'][41];
    $submenu['options-general.php'] = $order;
    return $menu_order;
}

This works, but it only shows General and Blogging, the rest are removed:

Settings
-- General
-- Blogging

Also, $submenu['options-general.php'][41] is currently index position 41 for me. Does this mean it will be the same index position for everyone else even if they have another plugin settings listed?

Got it, thanks to cjbj’s help, I was able to get the final solution:

add_filter( 'custom_menu_order', 'submenu_order' );
function submenu_order( $menu_order ) {
    # Get submenu key location based on slug
    global $submenu;
    $settings = $submenu['options-general.php'];
    foreach ( $settings as $key => $details ) {
        if ( $details[2] == 'blogging' ) {
            $index = $key;
        }
    }
    # Set the 'Blogging' menu below 'General'
    $submenu['options-general.php'][11] = $submenu['options-general.php'][$index];
    unset( $submenu['options-general.php'][$index] );
    # Reorder the menu based on the keys in ascending order
    ksort( $submenu['options-general.php'] );
    # Return the new submenu order
    return $menu_order;
}