Hmm, well I don’t have any greater-than-normal insight into these sorts of things than any other fan coming up with HS theories, and I really(rather too passionately :p) believe both that these sorts of questions are ones with answers inside of you, and that “personality test” stuff like Role can’t really get to the truth of a non-fictive person(I will mercifully spare everyone the philosophical rant and seemingly out-of-left-field pot-shots at Jung >:]), but I can talk about my own process for considering this question.
I think canon established pretty clearly that Role is highly personalized and subjective, so the first question to ask yourself is “which Aspect do you like/are interested in/find compelling the most, and feel the strongest connection to?” Think about what each Aspect means to you, and which of those concepts you like&identify with the most.
More over I believe that Role is descriptive rather than prescriptive and, more theoretically, that the Aspect chosen to “describe” an individual Player is that Aspect their life is most entangled with. So, the next question to ask yourself is “which Aspect do you think has the biggest impact on your life and sense of self?” Which of these Aspects seems to pop up again and again in your life, and influences your personality the most? Which one of them do you think influences and defines your irl relationships? Which one of them do you think most influences your circumstances?
If these questions don’t provide a clear answer for you then it defaults to the question of which one you like the most, and if you find yourself liking one Aspect more one month and another one the next there’s no need to worry about that; you’re not a character like John or Rose you’re a True-Facts person, and questions like Aspect alignment are just fun&interesting games we people play to learn about ourselves 🙂 I don’t think there’s truly any “objectively correct” answer to this question, nor such a method for reaching one, so while I hope the method outlined above helps you in thinking about this question, I also hope you don’t feel too terrible bound to following it :p