I never really considered them influential, there were an insane amount of bands doing that exact same type of stuff in the late 90s. The difference is the first Linkin Park album had some decent songwriting and really catchy hooks, kind of a guilty pleasure.
Don't think I've heard a single song past their debut, maybe something that was in a Transformers movie. Anyways, they're a silly rap/rock band and not to be taken seriously.