Summary
The SharePoint List can be customized. It is as shown here. But question is how to find out all the list names which are customized for PowerApps?
Answer
It is very simple, I saw multiple places and I want to documented here.
Using the PnP.PowerShell connect to the site using Connect-PnPOnline.
Execute the following command to get the PowerApps customized list names.
Get-PnPList -Includes RootFolder.Properties | ? { $_.Hidden -eq $false } | ? {$_.RootFolder.Properties.FieldValues.Keys.Contains('PowerAppFormProperties')}
Conclusion