Search notes:

Registry: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer

Values ShowRecent and ShowFrequent

The values of ShowRecent and ShowFrequent determine if frequent folders and/or Recent files are shown in the quick access part of the File explorer.

Some subkeys

Some subkeys found under HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer include
Advanced
AllowedEnumeration
ComDlg32
FileExts
HideMyComputerIcons
RecentDocs
RunMRU
Ribbon
Shell Folders
StartupApproved
StuckRects3
Streams
User Shell Folders
UserAssist
{Virtual Folder Name}
VisualEffects

Index