The US News and World Report is one of many rankings. It’s a decent “rough guide”.
Some good guides to tell you about the specific schools:
Fisk Guide to Colleges
Princeton Review best 384 Colleges.
Colleges That Change Lives (these are for smaller, liberal arts colleges that deliver an excellent education and are often under the radar). They also have a website.
So, one wants to study Finance (Economics? Business?) the other Biomedical Engineering? Do either of them want to go to graduate school (MBA, or Medical School)? The reason I ask is that in the US, your undergraduate education is not always heavily geared to pre-professional studies with a guaranteed job after graduation. There are certain fields, however, that lend themselves to good offers with a bachelor’s degree: Computer Science, Environmental Engineering, Geology, Chemistry. Increasingly, people go to graduate schools for specialization.
A bachelor’s degree in Econ/Finance can lead to a job in an investment bank or asset management firm.
I don’t know much about Biomedical Engineering except people often work in Labs or go to med school.
You are looking to maximize career prospects. Some of that has to do with the program of the college (does it emphasize research and internships?) some of it has to do with prestige (big name schools get attention), some of it has to do with the strength and loyalty of the alumni network. Another factor is will they enjoy the school and make friends? Social Capital developed in an undergraduate education is very valuable.
Start with schools that offer the majors they want. (Finance is tricky, since it is often a subset of Economics).
Do your twins favor small vs. medium vs. large schools? Do they learn best in lecture hall with 500 students or smaller class with 25?
What about cost? Is that completely irrelevant?
What about their grades, ACT/SAT scores, extra-curricular activities? Determining where they have a chance to get in also important - it won’t matter if University X or Y are the best-rated and get the best salaries upon graduation if they are not accepted.