Answering my own question as noted in the edit:
This actually seems to do the trick, not sure if it’s the best way though:
add_menu_page('Oranges', 'Oranges', 'edit_posts', 'edit.php?post_type=fruits&subtype=oranges', '');
Answering my own question as noted in the edit:
This actually seems to do the trick, not sure if it’s the best way though:
add_menu_page('Oranges', 'Oranges', 'edit_posts', 'edit.php?post_type=fruits&subtype=oranges', '');