Yeah, those aren't grunge bands... they're not particularly good bands either
You should check out some other bands from the grunge era, there are some good ones... pearl jam have some great stuff, but more when grunge hype was dying down (vitalogy era), nirvana were good (but a little overrated), smashing pumpkins are gorgeous (although ive only heard their singles mainly.. need to get some albums), and soundgarden are tops too
Also, the precursors to the grunge explosion are great, especially late 80s sonic youth (or any sonic youth, for that matter).. the pixies are good too, but im not sure how much they influenced grunge
Oh, and to confuse your definition of Grunge more, its more og a marketing term than an actual genre, too. Its not clearly defined enough, Nirvana were pretty punk and Pearl Jam are pretty rock, pumpkins arent that grungy.. its more a tag stuck on a lot of early 90s rock bands...
