Ok, this one item was easy enough. Just set the title on the UIWindowScene...
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
guard let windowScene = (scene as? UIWindowScene) else { return }
#if targetEnvironment(macCatalyst)
windowScene.title = NSLocalizedString("My Help", comment: "My Help")