New
#11
in the User Shell Folder ... your 1st screen shotYou are right! So far I counted 4 assignments of Downloads, but I didn't touch them yet. Please see the attached images of the two regedit trees.
Right Click on the following keys > modify and change the Downloads to Desktop
{754AC886-DF64-4CBA-86B5-F7FBF4FBCEF5} : %USERPROFILE%\Desktop
Desktop : %USERPROFILE%\Desktop
in the Shell Folders ... your 2nd screen shot
Right Click on the following key > modify and change the Downloads to Desktop
Desktop : c:\users\ ineuw\Desktop
Don't remember if you need to Reboot PC or just close/open File Explorer, but it's a good idea to Reboot PC and hopefully you'll have your Desktop and Downloads folders back.