I don't know if there is a typical NC schedule - I think you really should use it as a strategy portion of the game. For example I started a game using Central Michigan and I gave myself a tough NC schedule in year one. I figured if I play good teams that will help me having those on my resume even if they are losses when it comes time for tournament consideration. Turns out the team was so lousy I didn't make any tournament at all. After two years my job security was getting pretty low and one of the requirements the board wanted was to be above .500 so I changed the NC schedule to be a bunch of cupcakes to get some early and easy wins and keep my job safe

If I'm using a powerhouse school I wouldn't go on the road to play a cupcake and I might schedule one or two tough NC opponents just to see how good my team was early on - you know, to figure out where you stand. All in all really though it should be a choice to fit your motives and do what you feel is best for your school right then and there.