Launching LGTV app via activity

If I want to launch a specific app on my LGTV via an activity how can I do this?
I can see all of them in the guide for the watch TV activity.
Thanks

See here:

I saw that thread and tried all the ones listed there already. The only one that launches ia Netflix. Is It possible to get simple control to give me the actual names?

These have not changed and they don’t vary between modern models. Here are a few from a current device:

com.webos.app.livetv
netflix
amazon
hulu
com.movenetworks.app.sling-tv-sling-production
channelplus.us
vudu
googleplaymovieswebos
com.dolby.lgapp
com.webos.app.browser