They're just placeholder names for Pokemon that weren't fully made yet. We can probably assume Smiley is Shaymin, given the appreciation theme. Birthly could just be Manaphy. Dahabu, Saan, and Gordon could be ideas that never made the cut as far as we know, but if they match up to any finished Pokemon they're probably Cresselia, Darkrai, and either Heatran or Garchomp.
Also note that the original picture is actually using early placeholder names for Arceus, Dialga, Palkia, and Regigigas, which are Aus, Ea, Ia, and Tex. And Giratina's circle isn't even there because Giratina wasn't thought up until later in development.