Counterphobic 6w5. My reasons are contained in your childhood biography. The aggressive part describes Level 6, "The authoritarian rebel." That level doesn't necessarily mean anything for the present day, only for the pre-college years.
There is much evidence of moving up and down levels in your 5-minute bio, which is another indicator of a type 6.
You say you are gut-center, but there is a very distinct focus on rationality in this: "let's not resort to ad hominem shall we? If you have some actual information, I'm all ears, but I don't appreciate your... " Sounds like a type 5, especially if spoken in a calmer tone of voice.
"at home, I was basically a recluse. I just went up to my room and thought about what my beliefs should be..." That is 6 at level 2, with a reclusive 5-wing coming into play. There is the beginning of some self-doubt coming into play, so you were searching for external answers, whether in a group of friends or a belief system.
Your description of moving from an aggressive posture toward life to a more passive one practically screams type 6.
Lastly, the 6 takes a repressive stance toward their own rational minds, so they will bring forward gut center and/or emotional center traits. One can see this easily in your description of your "masculine" assertive earlier years versus the years later on when you appeared to be more like your "feminine" side.