In actual practice, is there any US-certified airplane or glider where the approved flight manual, or cockpit placards, indicate that loops, rolls, or any other similarly aerobatic maneuvers other than "spins (if approved for plane), lazy eights, chandelles, and steep turns, or similar maneuvers, in which the angle of bank is more than 60 degrees but not more than 90 degrees" are allowed when the aircraft is operated in the "utility" category?
Also, in theory, would it ever be permissible for this situation to occur for a US-certified airplane or glider, if the manufacturer proved that the aircraft was safe for the maneuver in question? Perhaps in conjunction with additional restrictions on weight or CG location?
See this closely-related question that notes that this IS the case for some airplanes and gliders certified in other countries: In the US, would it ever be legal to fly a loop in any airplane or glider that was operating in the "utility" rather than "acrobatic" category?
The current question is only asking about US-certified airplanes or gliders.