Disable various UI features
This is as expected, opinionated, but it is intended to remove features that are by design just "extra clicks" and similar slowdowns.
The intent of e.g. Update Controls are that updates are installed at the user's discretion and the user knows what they are doing.
Cortana
Computer Configuration > Administrative Templates > Windows Components > Search. “Allow Cortana” -> Disabled
User Configuration > Administrative Templates > Windows Components > File Explorer > Turn off display of recent search entries in the File Explorer search box > Enabled
Lock Screen
Computer Configuration > Administrative Templates > Control Panel > Personalization. “Do not display the lock screen” -> Enabled
Notifications/Telemetry
Settings > Personalization > Lock Screen Settings > Personalization > Start Settings > System > Notifications & Actions Settings > Devices > Pen & Windows Ink Settings > Privacy > Diagnostics & Feedback
Explorer
Explorer > View > Options > View > “Show sync provider notifications” - uncheck Explorer > Share > Share > Right-click “Show app suggestions" - uncheck Explorer > View > Hidden items - check Explorer > View > File name extensions - check
Update Control
Settings > Network & Internet > Wi-Fi > Properties > “Set as metered connection” - On Settings > Update & Security > Windows Update > Change Active Hours Settings > Update & Security > Windows Update > Advanced Options > Delivery Optimization > “Allow downloads from other PCs” - “PCs on my local network.”
Color
Settings > Personalization > Colors > Default App Mode > Dark Settings > Personalization > Colors > Choose accent colour > “Show accent color on the following surfaces” > “Title bars and window borders”
Sticky Keys
Settings > Ease of Access > Keyboard > “Use Sticky Keys” > “Allow the shortcut to start Sticky Keys” - uncheck Settings > Ease of Access > Keyboard > “Use Toggle Keys” > “Allow the shortcut to start Toggle Keys” - uncheck Settings > Ease of Access > Keyboard > “Use Filter Keys” > “Allow the shortcut to start Filter Keys” - uncheck