The rock band from the 70s revered as one of the greatest bands ever, releasing songs such as "Stairway to Heaven", "Kashmir", and "The Immigrant Song" to name a few.
I always thought some of The Who's stuff was very Zeppelin like, especially on their "Who's Next" album, which is great you should definately check it out.
ACDC have that hard rock sound which came straight from Zeppelin. Highway to Hell & Back in Black are their two standout albums.
Jeff Buckley is very much like the quieter sound of LZ. Many people have said that his voice is very similar to Robert Plant's and his songwriting style is very ... deep xD
You could search around on some Classic Rock radio stations - a lot of classic rock is influenced by Zeppelin. Hope this helped!