@sackblake, again, we still really don’t know enough about you to make recommendations on schools, or career path. In fact, I don’t think we know whether you are currently composing music, and what kind.
Was your interest in music theory sparked by a particular class you took?
For BM programs, you really need to have 3-4 pieces, at least some of them performed live, to apply. For a BA, you don’t need a portfolio or, usually, an audition.
Have you been doing composition or studio/music production work at the community college where you are? Or outside of school?
It sounds to me like a BA is the degree for you, and for that reason, I would mostly avoid the schools mentioned that also have BM programs.
You have not mentioned performance as an interest, but mainly seem focused on the academic/liberal arts aspects of music: history, theory, composition. For that, again, a BA is probably the best route.
A PhD in composition or theory is not a performance degree. A PhD in composition, like theory, involves a lot of research and writing, and the development of one’s art involves research as well. It does qualify you for teaching at the college level, and part of the training involves teaching as a TA. But as we have all said, once again, there is little job security right now for university teaching and many schools are cutting humanities jobs.
If you really want to do music, you could consider music education for a degree. We don’t know if you play instruments. I think that many high schoolers are passionate about music or whatever their interests are, and it is a key time for a teacher to have an influence.
That said, you don’t have to even major in music to do take theory, composition or music history classes. You can also continue music as an extracurricular with lessons and performances.
Sometimes it helps to try to think about undergrad education without a focus on career (scary as that is). It is still true that you could major in music and land in many other career paths, or grad/professional schools. The reverse is also true, you could major in, say, philosophy, and still do music in grad school.
I would try to do what you love for the remaining college years, and what you are good at. That sounds a little idealistic in this day and age of high costs and loans, but it can work out.
Alternatively, if you want more certainty, choose a specific career path and follow it, and do music on the side
You asked about Europe and the UK. I could tell you conservatories abroad but that doesn’t seem like the best option for you. I would also consider Canada.
It’s wonderful that you have so many interests. I hope you can continue to explore no matter what you settle on for a major. If you are in CA you have some great options for finishing your BA. I hope music is always in your life regardless of what path you choose.
I will PM you.