I found a third angel for you: Angelic Curator was released in Urza's Legacy.
The other two are Glimmering Angel and Angelic Page.
You can make an Angel themed deck by adding cards that are not angels: Angelic Wall, Angelfire Crusader, Angelic Blessing, Angelic Renewal, Angel's Mercy, Angelsong.
Technically all changelings are angels too, and even have the word angel hidden in their ability - changeling