Yea, Goblins are a civilization, so they should be in it. I noticed distinct "goblin areas" in my map as well. Kobolds only have caves though and dont really claim land, so they dont have borders as such.

Also, the map looks really good, and especially easy to understand and use. The areas of deep sea looks different from the coastline somehow though, like you could see the brushstrokes. If you want them in the same "style" or feel, you could use landmasses and land areas as templates. (resized, different parts overlaying each other to make a new outer shape and so on)