Zep's influence was a lot more wide ranging than Sabbath. I think you'd be really surprised at how many artists across a very wide range of genres would name them as an influence. Here's another interesting read on the subject.

Long read warning.

http://textfiles.com/reports/zeppelin.txt

Again that article confirms my suspicions that the bands most heavily influenced by Zeppelin aren't so good. Dokken, Steve Vai, Cinderella, and Whitesnake? That's some pretty serious slim pickins.

Those are some some of the ****ty hair metal guys that blatantly ripped some riffs.

Both Ozzy and Tony have said that Zep I and Zep II were huge influences on the direction they decided to go with Sabbath.

Then there's these:

http://www.buzzfeed.com/spotify/band...t-led-zeppelin

My phone doesn't like that link if you just want to tell me the 15 bands.

I think the initial point wasn't that Led Zeppelin aren't influential, but that there are other artists that are equally/more influential.

The Beatles, The Stones, and Bob Dylan. Joni Mitchell too.

Pretty everyone that came after them took a huge amount of influence from one or more of them.

“I think at that point we were aspiring to be a Led Zeppelin kind of a band where you could pick up your acoustic instruments or you could go out and rock or you could play a country song." - Pearl Jam's Jeff Ament

Did Led Zeppelin influence the state of ambient music? minimalism? jazz? electronic music? noise? modern classical? drone?

Even metal or other subgenres may have been indirectly influenced by Zep through the power of degrees, but like I wouldn't say they were hugely influential in the development of black metal or industrial or new wave, etc(unless you want to use the well Led Zeppelin->A->B->C->D->E->black metal which just turns into a who's older contest).

Led Zeppelin are extremely influential in rock music, but they didn't recreate music or anything and there are tons of other music avenues, styles, genres and movements that they did not touch or help develop.

I'm strictly talking about rock and it's immediate off-shoots.

A couple of examples.

Communication Breakdown > The Ramones

Four Sticks > Jane's Addiction

gotcha. we're on the same page then

Black Sabbath mostly influential to extreme metal genres, whereas Led Zeppelin the whole heavier end of the rock spectrum in general.