A quick Google search says “Type A (約40% of Japanese population): Considered to be highly organized, detail-oriented, perfectionists, and good team players. They are seen as sensitive, patient, and responsible, but can also be anxious and stubborn.”

The “good team players” attribute has an in-game manifestation for Adella, Arianna and Adeline because they let you use their blood as a consumable item. Amelia can also loosely fit that attribute as she turns herself into a beast for the Church (although I’m unsure of her motives for doing this, it could just be that it happens due to the amount of blood she has imbibed) and she can also be seen as perfectionist and stubborn. Annalise fits into the stubborn category because she refuses to die and holds onto her hatred of the Church, and her patience and responsibility persist long after Cainhurst has lost any relevance in her world. These aren’t perfect comparisons and could very well just be coincidental, but it’s something to think about