Woohoo, here I go. So yours was a bit hard for me to write for, mainly because I didn't have many new and interesting inquiries for ya(mostly in the enneagram realm). I gotta say though, your MBTI has stumped me a bit. So that's where we shall start. Some people think you're Fi dom, and I know you've gone back and forth between the two ISxPs and also considered Te auxes. However, while I can see why you'd appear Fi dom, with strong Fi comes weak Te, and I don't really see any inferior Te struggles in you. ISTJ I considered because of inferior Ne being on the table(your fear of new situations and not knowing how to adapt + not really being the type to go on tangents). However, not being Se valuing just sounds so wrong for you, though Si dominance in socionics makes sense. So, the next logical course would be ISTP. I think you have some healthy Fe in you, albeit in a lower position. Also, you are definitely not demon Ti, and Si critic does make sense for you. Also, I don't always put a lot of stock in the in the MBTI temperaments due to how stereotyped they can be, but it's like, how can you not be SP?? Some people say that thinkers can't be 4 core, but it's hard to picture anything else for you. With that being said, onto enneagram.
4w3 is definitely your core, from the motivations and desires to the more mechanical aspects. I see disintegration to 2 in that when you are down, you worry about unlovable you may be and start to sort of "soften up", willingly become more vulnerable, become more attention seeking. I also see lots of line to 1, as you become more disciplined and competency oriented when you're healthy. I think you are a withdrawn core at heart, but it's definitely backed up by an assertive wing. You are very clearly 3 winged, I don't see any of the avarice of the type 5. Sx dominant for sure, you are very competitive but the fact that you're competing against yourself more than anyone else screams sx 4. For your gut, I think 1w9 is the best fit. I considered 9 fix a little bit, not super seriously, because most of your anger and disgust is geared towards yourself(which like I said before isn't anti 1, but made me wonder gut positive). However, as I got to know you better, I've realized your 1ness shows more from your 1L. I also can't see the coping mechanisms of 9, and while you merge, its more from your sx, you lack that fluidness of the 9 and the sort of "losing yourself". You told me you were considering sx/so, and I honestly am not sure. Like I can definitely see it, but is it a better fit than sx/sp? I'm not sure. Hopefully I'll have a better answer for you soon, but it's like, I can totally see you as so playground, and at the same time I see the tenacity of SP 4, and no real signs of SO 1, rather the grittiness and groundedness of a SP 1. Actually, your variants don't really seem to fight against each other, so sx/sp might be the best choice. 6 is definitely your head, I see a 7 wing in you in that you have a need to be active as a way to tune out, but it's not your main way of dealing with anxiety and you don't really deny your anxiety either, you grab it by the wings. While you like to treat yourself, that FOMO isn't something that rules your life. Also, positive in head? Nahhhh.
For AP, I can't really argue anything else besides LEFV(well maybe LFEV, but that's a stretch). You look more V than you are, but it's results oriented. I think your 3F is part of why you look more V than you are too, for example using Krav as a way to ease some of your 3F anxieties. Kinda like what you said about Luisa's 3F in your Encanto post. I see 2E in ya that you are very respectful of other peoples emotions, and while you don't like everyone you still have a way of making them feel accepted. Like, no matter who walks in the room, they're your people now. 3F is clear, I only suggested LFEV cause I can potentially see 3E but I think that's because of so blind+4+sx. You're easily disgusted about all sorts of physics matters, and are extremely picky. And finally, 1L, you are very staunch in your logical opinions and straight to the point about it, and don't do so well if other people's logical falters(I think this is partially Ti too, but a lot of Ti doms are 1L I think).
For temperaments, I'd say Melancholic Choleric for sure. For Oldham, why, another vigilant! Ravenclaw for Hogwarts house, I'd say.
