Aerobatic Maneuvers : The Russian Air Force has developed tactics for using Flankers to fight stealth fighters that concentrate on taking advantage of the plane’s remarkable maneuverability to survive the first missile attack.
Chengdu ( Chinese cutting edge stealth technology ) Well not perfected to standards of American stealth engine heat masking technology, but certainly getting there as radar semi invisible design wise !
Ekranoplan Casspian The Russian Tank-Ship-Plane. Not exactly a plane but still cool. It flies just over the water because of ground effect. So it can haul a heavy load very efficiently compared to getting it up to altitude. Or floating.