this songs were all a cry for help and no one gave a shit about the person and only cares about the music :( sad world. eminem also crying for help in new track darkness, probably they take him out sooner or later too.
Every song Chester sang was a cry for help, of course evryone knew and everyone cared but some people just cant be saved, not by their loved ones not by anybody, like Curt Kobain just cursed with anxiety and depression and it just goes x10 because of fame
actually the most songs are written by Mike. He was the big mind behind Linkin Park. This guy is amazing, he can play literally all instruments in the band and also leads the pre-production for their albums.
From hybrid Theory only In the end is the main work from Chester.