Yeah, you’re right to highlight warcraft although I don’t think it’s a clean line with Warcraft between dune 2 and c&c. C&C was probably around 2 years into development by the time Warcraft came out, and my assumption is most of the actual game design was pretty finalised by that point. Though I’m sure some minor influences made their way in, I don’t think Warcraft massively affected the kind of game we got in the end.
But yeah that’s not to diminish the contribution of warcraft to the genre, there’s loads of games that followed copying the Warcraft style of RTS, even as part of the c&c series in the end with Generals.