I tried to be scientific about this. Went to the PK stats feature, sorted by PKW, then sorted by class. Looked for giant warriors in the last 5 years. Was slim pickings, but here are the ones I found:
Eleagra, Fire, Empire, Sword/Mace, Crashing/Greeting
Grafacut, Fire, Outlander, Dagger/Whip, Crashing/Greeting
Kurbrawn, Fire, Empire, Sword/H2H, Cry/Harmonious/Fires. One of those given as a reward, but I can't tell which from the PBF Probably Fires.
Aoirse, Cloud, Battle, Axe/Polearm, Riddle/Trapping
Zarkyem, Fire, Battle, Sword/Pole, Greeting/Landslide
Panitorop, Fire, Outlander, Sword/Axe, Cry/Gates
In order of popularity among deathful giants from the last five years:
Greeting: 3
Crashing: 2
Cry: 2
Harmonious: 1
Riddle: 1
Trapping: 1
Landslide: 1
Gates: 1