Is my late diagnosis detrimental to my future college application process?

I don’t exactly know what I have yet, my full 3 hr diagnosis is next month. It’s somewhere in the range of a learning disability, psychiatric disorder, or ADHD.

I’m a junior in high school in an overqualified college preparatory (public) high school. I know there are a lot of well qualified people on these posts so please don’t refer to my accomplishments, or lack of for the matter, as me being sloth, lazy, or not motivated. Those kind of people actually have it kind of better than I do.

School:
I have a 3.1 GPA, but a 2.9 UW (I’ll explain later), By the time I graduate I would have taken 7 AP courses AP Euro, AP Spanish, AP Psychology, AP Statistics, AP English Lang, AP Lit, AP Studio Art
I have not taken the SAT yet because my psychologist told me to wait until after I was properly diagnosed

School Extracurriculars:
Varsity Speech and Debate, Vice President of a Mexican charity club, VP Fashion Club, Gender Equality Club, and possibly more depending if the club I’m trying to start gets approved
Varsity Swim and Dive, Water Polo

Extracurriculars:
Teacher for Bible classes and Vietnamese classes at my church - 2 years
Youth group leader for two different youth groups, in one yg for 10 years, one for a year
Church choir and pianist 5 years
Piano 13 years, guitar 4 years
alterserved
President of the Kids Club at my church
Manager of Feeding the Homeless

Passions:
I have always loved school. I took AP classes not because it’s impressive but because the information is so compelling. And a lot of the times I didn’t do well. There was something offputting since freshman year, when my grades ranged from A-C range when I was putting in A+ effort. It wasn’t even the effort. It was the fact that I was confident in the content I was learning and everything seemed to be good, my essays, participation, presentations, except for my tests. I blamed it on the lack of self discipline, so I overworked myself, eventually exhausting myself. So I resorted to the arts and my love for languages. I completed the entire Spanish curriculum my school offered my sophomore year, and by the time I graduate I would have finished the French curriculum as well. (4 languages total including my home lang. Vietnamese)

I’m also fascinated by people, especially young people. By the time I “graduated” from my Sunday class, the administration always takes graduated students and assigns them as T.A.'s My teacher I was TAing for was gone one day, so I filled in for him. I loved it, the admin was impressed, and now I teach two classes kindergarten and 9th grade.

I have close relationships with my school teachers, because they notice the disparity in my tests and me as their students. I talk to them about it on a constant basis. but I’m nervous now that because I’m getting diagnosed halfway through my junior year, colleges are only going to see that 2.9, 3.1, 3.4 whatever GPA. I’m afraid that’s going to be a big dent for me if I want to go to universities with strong programs in fields that I’m interested in. And fields that I’m not interested in, because I’m pretty sure I’m going to be that person that sits in classes I’m not registered in, and listens to lectures simply because I can.

I want to teach. Internationally, locally whichever it may be. But I also want to go to Law School for graduate school. I’m interested in the FBI agency and that would be a good asset for me, but I’m afraid that disclosing that information is going to lessen my chances for some reason, oops.

I don’t know what would be an appropriate major, maybe Interdisciplinary Studies in Social Science Education (It’s a thing) I don’t want to major in education but I know I want to minor in Arabic, and go to Law school (maybe a little far fetched)

My family is low income and I live in CA so I qualify for a lot of grants for schools here. But I’m really interested in schools in Michigan (MSU and some others) and NY (Manhattan College, Fordham.) and they’re so expensive! I need scholarships and grants

So my conclusion, my GPA is not an accurate representation of my intelligence, but it’s definitely a representation of my chances of getting in anywhere, which sucks. Uhh, I’m sort of always stressed and confused and scared about the future. When I am properly diagnosed, will that help my chances, or be taken into heavy consideration? I’m not looking at anywhere prestigious, but I just want to be successful academically for once in my life. Is it always going to be like this? Me trying the best of my abilities only to produce mediocre results? Or worse, is it going to worsen in college?

I know you all aren’t Oracles or magicians and my post was annoying to read but feedback would be appreciated