It's been confirmed via the Global Link website that the Lake trio, Cresselia, Mismagius, Celebi, Manaphy and Meloetta haven't been retconned. The website displays the details of any trade (even before it happens), so you can ask for any Pokémon and check its types on the website. Do note that this doesn't work for Diancie, Volcanion or Hoppa.
I've also personally tested Glalie, which is unchanged. I think that the only other feasible candidates are Milotic, Cherrim, Mew, Jirachi, Shaymin and Victini. But I doubt that they've changed when the above haven't; Game Freak's criteria leave a lot to be desired.