OK. First of all, I heartily agree with Daisy that Absolute Treasure, Queen's Circle, Celebration Song, Golden Panther, and Pacific Fire are gorgeous irises. I grow them in California, a very different environment from Daisy in Maryland, and they grow vigorously and perform beautifully here as well.
I want to point out twelve more fantastic varieties. These are varieties I would take with me if I had to move.
First, two top performing irises that fill me with joy every year:
Tend My Heart (Blyth 2016)
This iris is one of the first to bloom for me and blooms for a very long time. I just love it.
My Lady's Manor (Remare 2013)
Maybe similar to Tend My Heart, but blooms much later in the season. Also blooms for a long time.
Fluent Mandarin (Blyth 2007)
This photo doesn't show the veining in the standards, which is beautiful, but the color of the falls is accurate.
This is another early blooming iris, very vigorous and floriferous.
Global Crossing (Van Liere 2011)
I am very partial to neglectas and this is the best I have found so far.
Merchant Marine (Keppel 2007)