Ah my mistake. I've always only been using it for bosses over minions due to it's long cooldown so I totally didn't notice.
Here is the wiki link to all the future Kamis.
If you use google translate or click on the column with the title "覚醒" in it, you can rearrange the list so that only the kamis with awakening will show up at the top.
All the Kamis with blue "Max HP" (and "Max ATK" as well) are the ones with awakening because that is their newly boosted stat after an awakening.
Currently the list of awakened KH are:
Ares, Svarog, Gaia, Titania, Tyr, Thor, Susanoo and Sol.
Sadly there isn't a single Water with awakening yet but apparently they are one of the strongest team so I guess I can see why?
Sorry, I want a Diabolos too. Didn't realise that the title can be misleading. =3=