I am in complete agreement with the others that the guidance counselor at your school is best placed to help you craft a balanced college application list and to provide chancing information.
Thus, I’m interpreting your question or request as more of a “match me” with respect to offering suggestions of schools that could be of interest to you. You already know about SHYMP and the Ivy League, so what other schools might you want to consider that could be well-suited to your interests?
The first school that came to mind was Emory (GA). There are about 7100 undergrads here. There are many options to study bio sciences, economics, or math here. There’s also a concentration in Health Innovation within the business school and a joint major in economics and human health. The Hatchery, its center for innovation and entrepreneurship, might also align with your interests. The CDC is adjacent to the campus as well and their relationship offers a lot of opportunities. Plus Emory is part of Atlanta’s ARCHE consortium which allows students to take classes at other area schools, like Georgia Tech and Morehouse.
Some other schools you may want to consider include:
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Amherst (MA): About 1900 undergrads
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Boston College (MA): About 10k undergrads
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Brandeis (MA): About 3700 undergrads
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Case Western (OH): About 6k undergrads
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Duke (NC): About 6600 undergrads
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Howard (D.C.): About 10k undergrads at this HBCU
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Johns Hopkins (MD): About 6k undergrads
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Lehigh (PA ): About 5500 undergrads
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Rice (TX): About 4500 undergrads
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Tufts (MA): About 6800 undergrads
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U. of North Carolina - Chapel Hill: About 20k undergrads
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U. of Rochester (NY): About 6800 undergrads
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Wake Forest (NC): About 5400 undergrads
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Washington U. (MO): About 8100 undergrads
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Wesleyan (CT): About 3100 undergrads
I’m seconding the suggestion to investigate QuestBridge to see if you might qualify. If you’re matched with a school, you get a full ride. Amherst, BC, Case Western, Duke, Emory, Johns Hopkins, Rice, Tufts, Wash U., and Wesleyan are amongst the schools that participate (in addition to most of the SHYMP/Ivies).