Ricky is correct. The Chili Peppers would also be in that group--and none of the bands he or I mentioned sounded like each other.
The "Homerpalooza" episode of The Simpsons aired in May 1996. It was more about "alternative" than "grunge" but it was still absolutely a thing. Grunge was a subculture of alternative just like NIN's industrial, the Pumpkins' psychedelia/dream-pop, Alanis' "adult alternative"/singer-songwriter/Lilith Fair scene, Green Day's punk, and the Chili Peppers' funk-rock. They were all different but still all under the same larger umbrella as Pearl Jam, and they were all huge in the mid-to-late '90s and some of them huge well into the 2000s. And then there's the alt-folkies, the alternative rap scene, the Neil Young/Tom Waits/Bob Dylan codgers/elder statesmen...my alt-rock radio station played all of those acts.
I have to say, when I went through the '90s Yearbooks, my opinion of Raven ended up being more positive than negative. Sometimes his promos and matches were overlong and overbooked to shit but I generally found him to be at least interesting more often than not-interesting. Maybe all the negative comments I'd read from Loss and others in the reviews lowered my expectations, but he was a pleasant surprise in the end.