Well, it gets fuzzy along the edges, such as the Wheel of Time book from the D&D team which is just as D&D compatible as most of the weirder 3E supplements.
The Warcraft example is another good point, because that started out as an official licensed D&D product,
@Mercurius :
Dungeons & Dragons Warcraft The Roleplaying Game is the first book in the Warcraft: The Roleplaying Game series — which eventually evolved into the World of Warcraft: The Roleplaying Game series. It acts as the first edition's core rulebook. Initially published in 2003 under the d20 System...
wowwiki.fandom.com