Also, when I look for available destinations for my WatchKit App Scheme:
xcodebuild -project MyApp.xcodeproj -scheme 'MyApp Watch App' -showdestinations
{ platform:watchOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-watchsimulator:placeholder, name:Any watchOS Simulator Device }
{ platform:watchOS Simulator, id:39A53B67-98A5-43B6-9099-510C2EF0E9D4, OS:9.1, name:Apple Watch SE (40mm) (2nd generation) }
{ platform:watchOS Simulator, id:8165D3B1-F37F-482C-96A2-B902211C7F9D, OS:9.1, name:Apple Watch SE (44mm) (2nd generation) }
{ platform:watchOS Simulator, id:8199459C-E62E-411A-B094-CE8421E29C72, OS:9.1, name:Apple Watch Series 5 (40mm) }
{ platform:watchOS Simulator, id:18F33EAE-F8BE-4992-BB32-9E1FEC36FC25, OS:9.1, name:Apple Watch Series 5 (44mm) }
{ platform:watchOS Simulator, id:08C8B124-9AE2-4A46-A298-C553198450E0, OS:9.1, name:Apple Watch Series 6 (40mm) }
{ platform:watchOS Simulator, id:140DF90B-77A1-40AA-A627-F9A29D4A2080, OS:9.1, name:Apple Watch Series 6 (44mm) }
{ platform:watchOS Simulator, id:1BAB865B-C3EA-493F-A492-12CBDB196055, OS:9.1, name:Apple Watch Series 7 (41mm) }
{ platform:watchOS Simulator, id:65759D16-9551-414D-A8B2-DD99A29A7C84, OS:9.1, name:Apple Watch Series 7 (45mm) }
{ platform:watchOS Simulator, id:5B1852DF-88C8-4390-BAD7-5D51D317192E, OS:9.1, name:Apple Watch Series 8 (41mm) }
{ platform:watchOS Simulator, id:314E2275-F161-43D5-ACC4-4B833EEEEEFC, OS:9.1, name:Apple Watch Series 8 (45mm) }
{ platform:watchOS Simulator, id:1A225E88-FE82-42EE-8A0D-AD3744EBF7B9, OS:9.1, name:Apple Watch Ultra (49mm) } ```