As I posted before, kellogg will give out most big name scholarships (Austin, ArcelorMittal, etc.) during the call. However, they give out additional scholarships/grants with financial aid packages. I had a name scholarship which isn't on their list of scholarships and have friends who had named ones and company ones not on lists posted. There are also a lot of unnamed scholarships. They typically range from 5-15k where as the big ones are usually half/full rides.
My advice for all admits who are deciding, complete the financial aid packages and when you get that you may find out what else you are getting besides a bunch of loans. Approximately 1/3rd of students get scholarships of some amount.