I’m going to be a bit more sympathetic to the OP: I’ve known and worked with tons of international college and grad school students, and lived in several countries outside the US. Internationally, there is very much a focus on HYPSM and a few others, with little thought given to the many other great schools, including several in the “T-20” and certainly absolutely brilliant LACs like Amherst etc. That’s reality, and that’s a lack of knowledge about those other schools, quite simply.
But it is not just internationally: it is also a mindset for many in the US. There are so many “chance me” threads on CC posted by American students that focus only on HYP and a few others that there is nothing new in what OP is posting. These posts are often asking the same question that the OP is asking, and I’ve seen many of them before admissions and after admissions.
There may have been edits in the first post that I am missing, but I think OP is forthright and asking a question that, in essence, many students, American and international, are asking, albeit in different ways. And, I’m assuming that you’re relatively young.
I’m a parent of a student beginning the college exploration, and, honestly, I only focused on the brand-name schools like the Ivies, Stanford, and the T-20, forgetting about the rest. I’ve completely changed, and I am likely decades older than the OP. But that change has only come about relatively recently, and after spending a lot of time considering the collective wisdom that you find in sites like CC etc.
If you wind up working in the US, the Amherst name is well-known to anyone worth working with. And if they don’t know about it, well…you might not want to work with them if they don’t know about Amherst. As one of the posters said, NO ONE will care what school you went to when you start your career. The issue is how you do on the job, and learning as much as you can while in college is a great way to be successful at what you do. Indeed, you got into one of the very top schools in the US (and perhaps the world), so you are already way ahead. Be grateful and rejoice, and then work your tail-end off at college.
If you want, you can consider transferring. But do not neglect the fundamental rule that you will see on countless posts on CC by exceedingly wise folks, be they students, AOs, faculty and/or parents. “LOVE THE SCHOOL THAT LOVES YOU”! Throw yourself at the Amherst experience (or wherever you wind up going), and you will be rewarded, whether it’s personally, financially, intellectually etc.
Don’t look back for one second. You should be exceedingly proud of your accomplishments and looking forward to a wonderful college experience. Forget about what anyone else says except those that have your best interest at heart.