1. Wisconsin
2. Michigan
3. Iowa
4. Indiana
5. Missouri
6. Kentucky
For the record, I don't consider Illinois and Michigan as bordering each other, but in college I took a geography of Illinois class and it was steadfast in believing that the two bordered.
How do they eff that up?
Each state on the Lake control portions of the water, and Michigan and Illinois' borders that way touch. That is probably where they derived it. So they would also say that Michigan and Wisconsin border.
For me:
1) Wisconsin
2) Missouri (StL)
3) Indiana (Indy)
4) Iowa
5) Kentucky