Is there a way to list posts of only a certain category

I want to add a new menu point to post that shows posts of a certain category. Adding a new page is easy if it is just a new post type. But I want to only show posts with a specific category and when updating posts make sure the category is checked.

IS there no way of doing this? I was hoping for some simple functon, like the way register_post_type() does it. As there doesn’t seem to be, does anyone give me any tips about how to do this? Is it even possible? Or should I just use a custom post type?

You can filter the posts list by appending ?category_name=xx to the admin posts list URL, and you can add a submenu page with that URL as the target via add_submenu_page:

add_action( 'admin_menu', 'wpd_admin_menu_item' );
function wpd_admin_menu_item(){
    add_submenu_page(
        'edit.php',
        'Page title',
        'Menu item title',
        'edit_posts', 
        'edit.php?category_name=somecat'
    );
}