Missing sub-menus in "Reference" menu

Hi, i found out that the following pages dont exist in the left navigation menu (i expected to find them under "Reference" menu) :

- https://developer.wordpress.org/rest-api/reference/taxonomies/
- https://developer.wordpress.org/rest-api/reference/users/
- https://developer.wordpress.org/rest-api/reference/post-types/
- https://developer.wordpress.org/rest-api/reference/themes/