Maybe, if they are "regular networks", but I haven't seen any mention of such things as V-me, WeatherPlus, IonLife, Worship, Qubo, the BYU channels, etc.
It probably has more to do with whether TMS (Tribune Media Services) has the info, and has a substantial amount of it available.
I DO wish, though, that they would make note of the stations' -DT status, and list the subchannels in the sidebar of the grids. That would be a great starting point.