I think there are two categories of folders that can be accessed by simply typing their name in the Address bar. A few System folders seem to be hard-coded:
When either of these folder names are typed in the Address bar, the corresponding file system location opens:
But when you type "Desktop", it's not This PC > Deskop
or This PC > Windows (C:) > Users >
UserName
> Desktop
(two different Namespace paths that refeence the same file system folder) that opens, but rather the Virtual Desktop, which is the root of the Shell Namespace. It's an aggregate of two file system locations:
shell:ThisPCDesktopFolder
shell:Common Desktop
and two registry keys:
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace
where junctions to file system locations ( OneDrive, shell:UsersFilesFolder
) as well as virtual folders such as Network, Control Panel, and Libraries are added. The easiest way to view all sub-folders of the Desktop is the DropList displayed when you click the leftmost breadcrumb control in the Address bar:
Any name you find in this list can be typed in the Address bar without any special syntax. So any folder located in either of the two "Desktop" folders gains this functionality. With all of these values, there's nothing mysterious --- as top-level sub-folders, the folder name is also the fully-qualified namespace path.
In addition to the immediate sub-folders of the Desktop, it appears this functionality is also granted to the locations found under This PC: User folders, Devices and drives, and Network Locations can all be directly accessed by typing the container name in the Address bar. While adding folders that appear alongside the default user folders is possible, it's somewhat labor-intensive, requiring creation of a GUID and multiple registry keys for each folder you create. The Network Location functionality is much easier. Although the Add Network Location wizard will balk if you try to enter a local path, you can bypass the wizard. Any item ( folder, file, shortcut ) present in the folder accessed via shell:NetHood
will appear in the Network Locations group: