https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/AboutInformationPropertyListFiles.html#//apple_ref/doc/uid/TP40009254-SW3
Custom Keys
iOS and macOS ignore custom keys you include in an Info.plist file. If you want to include app-specific configuration information in your Info.plist file, you can do so freely as long as your key names do not conflict with the ones Apple uses. When defining custom key names, prefix them with a unique prefix, such as your app’s bundle ID or your company’s domain name, to prevent conflicts.