It's so wrong to lump in Foo Fighters with Nickelback. The band's first two albums were awesome, and yes they did kind of water things down as they progressed (or... regressed) but still, even their worst songs are better than anything Nickelback did.Rage gave rock music a template for remaining relevant and we squandered it on Foo Fighters and Nickelback.
Never got hugely into Soundgarden specifically because Cornell's vocal style was 80s metal banshee inspired.
That said, RATM's first album isn't where it's at. That would be The Battle of Los Angeles, which just. Keeps. Coming at you.