What is the exact RTS style of Warcraft?

I'm not the biggest RTS fan. I grew up with Warcraft and I enjoy that series a lot. I played some Halo: Wars back in the day and I really enjoy Pikmin (a very different take on RTS as I understand). Recently I've played Age of Darkness which feels like Warcraft to a degree, but is definitely focused more on surviving waves rather than resource management and army building to take out an enemy.

If I understand correctly, Warcraft's take on RTS is different from Command and Conquer and Starcraft. What exactly sets Warcraft apart from other RTS games and genres? Like how is the focus and gameplay loop different? I'm hoping to find other games like Warcraft. I know The Scouring and 8 Bit Hordes exist and plan to try these.

Edit: I have more memories with Warcraft 2 than Warcraft 3...but I have played all of them. I just played 2 the most.