Hey
I found this forum really late! I interviewed for the University of Michigan last week. They mostly asked me about my previous research experience. They also asked the typical “why is our program a good fit with your research interest?” The interview consisted of questions from all three program directors and current prep students. I think the best advice I can give is just find a way to translate interest/ research to all STEM disciplines. I am neuroscience based researcher and the directors of the programs had chemistry and biology backgrounds. I had to break down my neuroscience project down completely for them to see that I knew my project inside and out.