What blood types do you think the Ranma 1/2 teens are?

In contrast to series like, say, Sailor Moon, Ranma 1/2 gives us very little concrete details for its main characters in the more minor areas of their lives - we don't even know what days are Ranma and Akane's birthdays, compared to how Urusei Yatsura's protagonist Ataru Moroboshi was famously born on April 13. So, fans have a lot of leeway to make up those kinds of little details for their own fan-work.

Japan is, famously, host to the pseudoscientific belief that blood types influence/determine your personality, which they call "ketsueki-gata". I was curious if anyone has any headcanon what blood types Ranma, Akane, Nabiki, Kasumi, Tatewaki and Kodachi Kuno, Ryoga Hibiki, Shampoo, Mousse and Ukyo Kuonji might have according to ketsueki-gata. I'll explain the associations and give my headcanons below, but I'm interested in seeing what other folks think is the "right" answer.

Blood Type A has the positive associations of Creativity, Cleverness, and Cooperativeness, but its negative associations are Stubbornness and Uptightness. I'm inclined to see Nabiki as the only Type A amongst the teens, though Ranma could be either an A or an O.

Blood Type B has the positive associations of Strength, Passion, Empathy and Decisiveness, but its negative associations are Selfishness and Erratic Behavior. Akane, Ryoga, and Shampoo are all Type Bs, I feel.

Blood Type O has the positive associations of Confidence, Determination, Resilience and Intuition, but its negative associations are Self-Centeredness and Instability. Ukyo and the Kuno siblings, Tatewaki and Kodachi, suggest themselves to me as Type O. Ranma could be an O, or he could be an A, I feel.

Blood Type AB has the positive associations of Rationality and Adaptability, but its negative associations are Indecisiveness, Criticalness, and Forgetfulness. Kasumi is the only one I immediately feel inclined to associate with this blood type.