Here is a picture of Granada/Donatella one of Tiffany's progeny. It is truly fantastic in my garden this year. It is growing on its own roots here in zone 5/6 and survived its first winter in my garden. Everyone has been commenting on it and asking what rose it is.
Here is the hmf link, but there are a bit off on the zone. Elsewhere it is listed at 6+
Name: Toni Denver Metro (Zone 5a) Whiskey Tango Foxtrot.
I have found through trial & error to ignore zone suggestions. My Wimter Magic is a zone 7 mini, yet came through like a champ my horrific zone 4 winter this past winter.
I try to find reviews from other people in cold zones and keep notes on roses that do well for others. Sometimes, I check out the hardiness of the 'parents". Tiffany is my favorite rose so far, so I am willing to try her progeny.