The section at the top of the Start menu is called the Pinned section. This section consists of pins arranged in a grid. The items in this section are a subset of all the apps installed on the PC; not all installed apps are included in this section by default. The number of rows and items in this view are consistent across device panel sizes.
If you like, you can back up pinned items on the Start menu for any account, and restore the pinned items to the Start menu for any account.
This tutorial will show you how to back up and restore all pinned items on your Start menu in Windows 11.