^Yeah, that’s kind of the problem with lists like these. Even for graduate school there are issues, but for undergrad - without any specific, easily measurable criteria that is agreed upon across the field - it’s hard to come up with a list. It’s particularly tricky because undergrads only take about 1/3 of their classes in their major, so while major is important, it doesn’t even need to be the primary concern of an undergrad. There might be some really good reasons why a young aspiring math major might choose Williams over Clarkson, or Smith over Mount Holyoke, or Michigan State over Seattle U. Or even Pomona over Harvey Mudd or MIT.
The good news is that most good, solid colleges have good, solid programs in pretty much all of the majors they offer.