Black Dragon 22
Blue Dragon 21
Brass Dragon 18
Bronze Dragon 23 These are way cooler than any of the other main metallic dragons (I'm including Silver in this, too).
Copper Dragon 21
Dragon Turtle 19
Faerie Dragon 11 These are super annoying monsters. Great for DMs, but awful for players.
Guard Drake 12
Gold Dragon 23
Green Dragon 23
Red Dragon 21
Silver Dragon 21
White Dragon 20
Wyvern 11