In the Windows system, there are likely up to four different types of ‘Documents’ that you can find in your Windows system:
In your local user account folder:
x:\Users\{user}\Documents\
In your OneDrive private user account folder:
C:\Users\{user}\OneDrive\document
In your OneDrive organization user account folder:
C:\Users\sudos\OneDrive – Harvard University\Documents
In the Documents shortcut (this shortcut links to the first user account folder you logged in):
Documents