I've only heard a couple of tracks from them, and yeah, I can hear the Zeppelin influence, and as noted in the video, Zeppelin wasn't exactly 100% original either, even if they did put their spin on it. That said of course, Zeppelin in one of my favorites. We'll see where Greta Van Fleet goes.
From YT: Greta Van Fleet are gaining plenty of attention among rock fans. They’re reminding everyone of legendary rock band Led Zeppelin.