Hello Serj Kordyk,
It is called menus and menus items are placed under the main menu.
We have the different type of design of home as you see on the design. Actually, that is not a page, they are complete another site and we called it Multisite. So, you can make your site multisite and can make more sites. Check this link to know how to create Multisite.
Hope this helps.
Regards