I'm not sure one can make those sort of distinctions - it's all a bit subjective :-)) Bloom season will be the same for each - late spring/early summer then a lighter late summer/early fall rebloom. Other issues depend on your preferences and the actual growing conditions.

Type 2 clematis and even more particularly the barred forms are not my preference. But making choices like this is like choosing which is the best tasting apple - everyone has their own personal choices.

I went with Mrs. N. Thompson purely based on flower pictures.
Killian Donahue is listed as long bloom season. Don't know if it is true, and how it compares to the other. I liked both, had money for 1.

I prefer Mrs. N. Thompson..she is a slow starter but once she gets adapted ..she is stunning..such a brilliant color