I'm watching this thread for anything as well.
I see no problem seeing what other questions are asked on checkrides. It makes sense, that the examiner will ask things that your future students may. Now only if I can find someone to give you all the common "someday, someone will ask you..." since there is nearly infinite topics, and details that could be brough in on a CFI ride.
In any case, whenever I'm going somewhere, and may show up early, I open up the ASA oral exam guide. I really like the ASA books. Gives a question, quick answer, and a reference. If you went and read and understood every part in that book, I'd say that would be 90% or more of the oral prep needed.
But, I see where you are at asking now. That extra 10%, or whatever else you may need to know is the hard stuff.
Maybe a running list, on a thread here, for each rating. Questions asked, and answers given. Each time someone completes a ride, they could post any new questions that are not already there. Would make for some good reading in the final prep for whatever ride someone has coming up.
Josh