Isn't that the Wait Staff (Front of the House Staff)? Which is standard, and was previously stated.
soitgoes was stating that is it is common to inclulde everyone that is not management in the tip pool. So all cooks, kitchen staff, dishwashers etc.
Oh, sorry, I missed that part. I think you are correct: it is not common for dishwashers, cooks, etc. to participate in the tip pool.