1) There is no "more canon than other." There is how we see things differently, or understand what we see differently, or the gods fiddling with what is, turning it into might-have-beens. ;} What I write is canon, until contradicted by official TSR, now WotC publications. …
— Ed Greenwood (@TheEdVerse) September 10, 2018
2) Traditionally, licensed products have been seen as "a step less" canonical. But really, it comes down to this: in your D&D play, you choose what happens/what's canon. The published canon provides a common framework for us all, e.g. tournament play at a convention. Many…
— Ed Greenwood (@TheEdVerse) September 10, 2018
3)
…elements in the Baldur's Gate games and in novels haven't been contradicted by anything coming later, so they still stand. I cleave to written canon when creating new Realmslore (which I do every day) because it works best for consistency, if that helps. ;}— Ed Greenwood (@TheEdVerse) September 10, 2018