Alpha. I'm soft spoken and haven't raised my voice in years. I never get angry and am in control of my emotions at all times. I realize that some of the traits seem more like Beta traits until the whole picture comes out. You can be alpha and subtle, it just takes more patience.
I have complete confidence in my abilities, and anyone who talks to me for any length realizes it. For example, I started a new job recently along with 3 other people who have the same position. They're all bright guys who I respect. However, by the end of the first week of training, they would ask me first when they had questions. Not just questions about information that was given to us, but procedural questions about what and how they should do something that was never explained, knowing I had the exact training that they did. I answer all of their questions with confidence, and they almost always took my advice. I can promise you that after i've been here a month, people who've been here far longer will be asking me questions. That type of thing happens everywhere in my life, and i'm used to both the expectations and the responsibility.
I seem to project some sort of aura that I know what i'm doing, probably because I always believe that's so, and can back it up when challenged. On the flip side, I've never felt the need to ask my peers for advice, anywhere. Maybe i'm arrogant, but i've never felt that anyone around was more competent than me. I think deeply about the best course of action, take it, and never look back.
Whenever i'm in a group, no matter how large, we end up operating on my schedule. Many times, the people around me don't know that I was the one that decided, and that's okay. I don't care about the credit, I simply want things to progress in my preferred way. I don't consciously manipulate people, though it may sound like that. It's just that after i've decided what I want I set about making it happen. If i'm in a group, they end up coming along for the ride. One way or another, people around me seem to end up conforming to my desires.