Can you share what you like about CMU, as it’s your ED choice (I assume applying to Tepper)? That will help us better understand what you are looking for (your list is all over the place), but posters have made many good suggestions so far.
Is finance the major you are leaning towards? What major will you be at the schools on your list that don’t offer a finance major?
Does your HS transcript show a weighted GPA? If so, what is that? If it’s 3.8+ you will qualify for direct admit at IU Kelley, so that would be a safety.
Pay attention to schools like UVA that are not direct admit for business, and have a Plan B. McIntyre’s admission is competitive and holistic, so admission is not entirely in one’s control.
With that said, you can go into IB without a business degree (and some firms actually prefer that, and do not favor business degrees at all). There are many stem majors (e.g., math, neuroscience, etc.) going into IB jobs.
I second many of the schools on Austennut’s list for more attainable admissions. The ones that in particular have relatively good finance/IB placement (for the top students) are SMU, Baruch, Bentley, and TCU. I also second Miami Ohio Farmer school of business.