To answer, you must know something about the built-in lateral stability and that it was designed to work best at cruise airspeed. I define shallow to mean that bank where the airplane will return to wings level when released, medium to mean the bank where the airplane will remain, and steep to be where the bank will increase. So now we have the probability of using right aileron and right rudder in a chandelle to the left. Flight instructors should also not forget that their visual pictures are backwards from their student's. Let's next consider the lazy eight.
Nothing remains constant during the maneuver.
As in the chandelle, the lazy eight needs constant attention to the control inputs to move the aircraft through the maneuver. You should feel almost no G-forces, no slipping or skidding, no jerky control movements as the airplane traces its path. Combining all of your previous training in climbs, descents, turns, and airspeed control yields one of the more graceful maneuvers, one that produces feelings of pleasure when all goes right. There are times in the lazy eight when crossed controls are not only appropriate but also necessary. In the loop to the left, after the pitch up and starting to roll into the bank, right aileron is needed to keep the bank from increasing too rapidly.