This might a dupe, but if it is, I couldn't find where to merge it.
The usual wikitext editor shows a list of templates and modules (a.k.a. transcluded pages) under the editing window.
Visual Editor and NWE don't show such a list.
For VisualEditor this would be partially solved with T51772, although seeing a whole list would still be useful. For NWE I couldn't find a whole list anywhere.