I too have a white NOID, the only one I've kept. It drives me crazy when I don't know the name of an iris so I always give them away -- except for this one. It's one of my original six to eight rhizomes that I purchased at either Lowe's or Home Depot in 2003 or 2004, and out of those I think four were mislabeled. I purchased this one as MARY FRANCES, and it took two or three years to bloom for me because the rhizome was just about dead when I bought it. But when I saw it I thought it was absolutely gorgeous, and I won't part with it! For a while I thought it might be SKATING PARTY, but then I later received SKATING PARTY as a gift plant and they're not the same. Then I saw a picture of the iris CHRISTMAS and thought it looked a lot like it, so I named it "CHRISTMAS" just to make myself happy!
First year it bloomed
And again in 2011
Sure wish I could find out its correct name, but I realize that's just about impossible.