Hi, I'm also international Fulbright grantee and I just came by to say hello
I'm not sure my experience might be a little help, but as far as my experience, the interviewer at UT-Austin asked me the most obviously expected questions like research interest and my recent scholarly experience.
Good luck to U!
PS. Is anybody "NOT heard back" from the Upenn Annenberg? I believe other folks already notified admission decision from Upenn recently, but I haven't heard nothing. I'm just curious that there is any chance of being wait-listed...