Next article update on my horizon is the Dragon Rarity Guide. It's been under construction for a while, I'd like to get it polished up now that we've replaced the "Rarity" column on Which egg is which?.
I'm planning on restructuring it similar to WEIW, putting the breeds into a table, including the dragon sprites and notes. It will differ slightly in that I'm planning on splitting alternates out into their own rows where rarity differs (such as between Blacks and Alt Blacks, or Mints and the special event upside down Mints).
You can check the draft that's in progress here: Draft:Dragon Rarity Guide
Let me know if you have any questions, concerns, or suggestions.