Other packages (Watchmaker) are able to add complication using (free) api for weather complication.
Watchmaker has more or less an emulator on the watch
I did not mean a general universal list of apps, which obviously does not apply for all users. I meant a specific list of apps installed on the watch initialised at the start of the software, or created on request as soon as the adb debug is activated.
There is a thread on how to get App ID’s but it is use at your own risk, I am not sure they will pass Play Store review.
I did adb list and saw a whole lot more than show up in the app tray 
adb connect 192.168.xxx.xxx:5555 (your watch IP address & enable debugging)
adb shell
pm list packages
Ron
Samsung Developer Relation