Are you asking what model toilet will work for you? I would expect that any ADA compliant toilet should fit in a 14" rough in. There are many ADA compliant toilets to choose from.
I believe if you were to change the flange to an adjustable one, you could "lose" 2" and use a regular ADA toilet such as the Toto Drake. Often these flanges are offered as a way to gain 2" from a 10" rough-in to a 12", so I think they should work the other way. If this is not correct, I'm sure I will be corrected.
Thanks for setting me straight. As you could probably tell from my post, I wasn't absolutely sure. It appears that there are easier ways that changing the flange to get around the problem anyway.
Both have good performance and they look really nice.
I put them in a lot of older Seattle homes, though the new traditional style home would work well with them too.