podział tzw. credits jest bardziej skomplikowany więc akurat nie dziwi mnie że Duffa tam nie ma chociaż:
Slash describes the development of the music of "Welcome to the Jungle" in his self-titled autobiography. As the band was trying to write new material, Axl remembered a riff Slash had played while he was living in the basement of Slash's mother's house. He played it and the band quickly laid down the foundations for the song, as Slash continued coming up with new guitar parts for it. He credits Duff McKagan as coming up with the breakdown (main riff). Duff backs this up in his autobiography, It's So Easy (and other Lies), saying it was from a song called "The Fake" that he wrote in 1978 for the Vains, a punk band he was in.[8] He also said it was the first song he ever wrote, and that it was later released as a single by the band.[8] According to Slash, the song was written in approximately three hours.[9]