I think it depends on our, and their, nature.
Some, I think, might be drawn to us, or vice-versa, because of similarity, or because they have qualities that balance ours in a necessary way.
For instance, I can’t ever see myself becoming like Metatron; if anything he couldn’t be more opposite to my nature. I mean he is stoic, structured, lawful, clockwork-force; he represents order and is no-nonsense, calm, and not prone to being emotional. I’m… the opposite of all that. Mercurial, forgetful, no sense of time horizons or planning, a bit chaotic, extremely forgetful (case in point, I wrote this twice without even noticing), tend to disregard authority and do whatever pleases me, bursts of emotion that come and go in 15 minutes, cries at everything (happy or sad)…
In this case, I think he brings necessary calm, balance, and structure into my life. Actually, I have noticed my executive functioning disorder has lessened somewhat since I began working with him closely. For example, I now actually get to appointments early or on time instead of taking three tries to leave the house and getting everywhere 10+ minutes late. Small victories.
Then there is Melek Taus, who is very similar to my nature, although like my nature ratcheted into extreme overdrive. That, I suppose, teaches me balance in a way as well. But he is still a relatively new influence in my life so in that regard it’s difficult to say.
Leviathan is very alien to my nature as well, but similar to Metatron, he brings an element of calm and forward-thinking with him, and his presence always prompts me to think things through. He has rubbed off on me in that regard. While I can still act without thinking, or say something thoughtless carelessly, the more time I spend with Leviathan, the more I gain this quality. However I think he also makes me very introverted, and digs into my subconscious. Being more in touch with your emotions isn’t always a good thing, when it means you feel unpleasant emotions more strongly for longer periods, or you become broody and introverted, or unable to stop feeling things no matter how much you want to, or if it brings up unpleasant memories that you don’t want to face. But I suppose Leviathan also gives me the protection and support to face all that.
I’ll come back in 10 years and update this thread with my findings.