One of my cousins studied at Amrita University. According to him, the faculty members at Amrita are really good. Many of them work across different research centers, departments, and multiple campuses. I would clarify that I do not have much knowledge about the faculties at the other mentioned colleges and thus won’t be able to provide any insights.
You should also get engaged with peer groups and other extracurricular activities out of your sheer interest and self-motivation. This plays a very important role as well as provides a lasting impression.