We want to export a file "ONLY THOSE ITEMS THAT ARE LISTED ON A CHANNEL XYZ" not all items that are not listed,
And we want item details, specific to that channel like titles and descriptions that are already live.
What we have tried
1- Export > Channel description
2- Query Data > Channel Information
These exports give us all the items from inventory, even those items that are not listed but we want only those items that are listed.
Have you tried "Channel Items" export, it should give you more relevant information, especially if you apply filtering.