Hello,
Option “Categories in page title” will show the categories menu generated automatically based on all categories in the shop. It is not possible to manage this menu as other WordPress menus. By default, sub-categories will be displayed as the drop-down list
“Show current category ancestors” allows showing sub-categories and categories on the page. In order to add an icon enter the category editing mode and find the option Image (icon) for categories navigation on the shop page – Categories in the page title.
Best Regards