Holy crow, you guys must have absolutely massive iris gardens.
I just checked my list of what I have ordered so far this year, and it's already up to 41 irises (with a few more to come), and I don't know where I'm going to put them all (I'm still looking for places to put the ones I have in pots!). I haven't been paying attention to hybridizers, so I don't know how many of them are Keppel irises, but I do know at least one of them is - 'Wintry Sky'. Lovely name for a lovely (if pics can be trusted) iris.
(Most of the irises I have been ordering have been rebloomers, or something aimed at crossing with rebloomers, or something for a particular name association.)
That said... 'Rainbow High' looks like it has a beautiful combination of colors.