Good call, I always forget the Giants. However, I do believe that the three I mentioned are the most significant. I can stop noticing sets of 3. I actually have another kind of tinfoil theory that the 3 races I mentioned can also be matched with a celestial body. The Children represent Shooting Stars, still pools of water and the green power of the earth, the Dragons represent the Sun, the sky, and the fire of life, the Others represent the Moon, death, illusion and dark controlling power. I have been doing a reread and I can't stop noticing what I think are symbolic references to the sun, moon, and stars everywhere. I even believe Aegon, Visenya, and Rhaeny's can symbolically be viewed as the Moon, the Sun, and the Stars. Does this make any sense?