Graf Orlock easily because they actually write funny and intelligent lyrics and are much more intense.
The lyrical issue you raise reflects your difference in attitude from that of headbangers. The cornerstone of metal vocalization is that lyrics are generally of minimal importance & it is the effect of delivery that counts. There are bands (The Melvins, Children Of Bodom, maybe others) who regularly perform songs with nonsense lyrics.
They are a music group? I have always wondered who was that Bodom who seemed to have so many child in my school, because they were wearing a tee-shirt of them.