@Toh Thanks for posting in our Q&A. For this issue, I have done the test in my lab(Windows 10 version 20H2). The settings are same as you provided.
For "RequirePrivateStoreOnly" custom profile, I delploy it to my device group and I find it is successful.
For "TurnOnPowerShellScriptBlockLogging", there is the same build-in setting under Administrative Templates, so it is suggested to configure in Administrative Templates and it will succeed.
For "ConfigureWindowsSpotlightOnLockScreen" custom profile, I deploy it to my user group and I find it is successful.
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