Google "View all public frameworks from Apple and filter based on platform and availability" which will lead you to a website for an easy comparison of which Apple frameworks are available on which platform. Please note that even if a framework is available on a platform there might be less APIs available. Example: UIKit is available on visionOS but UIScreen is not

The absence of this protocol in Beta 1 is a known issue that is mentioned under the Known Issues at https://developer.apple.com/documentation/Xcode-Release-Notes/xcode-14-release-notes.