Final answer:
A drop-down list of commands below a menu name on the Menu bar is called a Submenu, which groups related actions accessible from the main menu.
Step-by-step explanation:
The name of the drop-down list of commands below a menu name on the Menu bar is a Submenu. When you click on a menu item on the Menu bar, it typically displays a list or panel that drops down, this is called a submenu. It contains related commands or options associated with the menu item you clicked on. For example, if you click on 'File' in a software application's Menu bar, you may see a submenu with options like 'New', 'Save', 'Open', etc. These submenus help keep the interface organized by grouping related actions together and making them accessible from the main menu