The normal user folders in Windows 10 are Documents, Music, Pictures, and Videos and appear under This PC as well as your User folder on the Desktop and under C:\Users<UserName>.
If you have Explorer set to show hidden & system files, you will see icons with shortcut arrows: My Documents under your Userprofile and My Music, My Pictures and My Videos in the Documents folder.
These aren't actual folders, they're junction points (for backward compatibility with older software) that point the folders mentioned at the beginning.
Notice the 'L' (Link) attribute when listied in PowerShell:
PS C:\Users\keith\Documents> gci -directory -force -filter "MY*"
Directory: C:\Users\keith\Documents
Mode LastWriteTime Length Name
---- ------------- ------ ----
d--hsl 18/05/18 15:51 My Music
d--hsl 18/05/18 15:51 My Pictures
d--hsl 18/05/18 15:51 My Videos
Keith