This data does not exist. Generally, lifetime earnings are more correlated with major than school and/or selectivity of the school. Look at career center sites at each school for summary reports, job placement outcomes, and grad school enrollment info.
A BME major from any ABET accredited school can be successful…therefore, some will say the less you spend on the education the better. You will find BME grads from schools like Johns Hopkins, U Alabama and Illinois Institute of Technology working in similar jobs, sometimes at the same company in the same department, earning similar salaries.
Finance/business/economics outcomes can be different by level of school, but not necessarily. If the student wants investment banking that might drive applications to certain schools. Many east coast LACs send econ majors to great banking jobs, while a school like SMU has great business outcomes, especially locally/regionally. Schools, of all levels of selectivity and ‘rankings’, that offer accounting and finance degrees can have very good career outcomes as well.
We don’t know if you have financial constraints, but that could drive school choices for your twins, along with the other considerations and preferences that posters have mentioned above.