When calling the 1.x ios plugin with /ios/1.x/info/simulators the watchos simulators will not be there instead being an array of null, however when calling /ios/1.x/info/simulators/watchos the simulators will be there.
This was tracked down to appcd-utils' makeSerializable that is filtering out duplicate values, and is occurring because it seems the watchos simulator objects exist in multiple places in the info output.
1. Ensure you're using daemon 4 (appc cli 9) and the daemon is started
2. Run [appc] appcd exec /ios/1.x/info/simulators
3. Run [appc] appcd exec /ios/1.x/info/simulators/watchos
No watchOS data in step 2
watchOS data in step 2