The recomendation from Ranorex support team:
In general only the whole menu is a control in WinForms. The elements within that control (MenuItems) can only be recognized via MSAA. The problem is that the "Name" attribute of the MenuItems is not accessible. As workaround I would suggest to use the attribute "AccessibleDescription" in your application in order to automate the menu. This attribute can also be used for language independent names.