Coachella 2007

[Ghoulish Delight]

Looking back, a dozen might be too high. Hard for me to say because I'm somewhere between the second and third category, so I know a lot of the names but I suppose not everyone would. The one glaring one that I'm surprised you haven't heard of is Rage Against the Machine. Beyond that, most of the other ones that I'd consider top-tier names (Arcade Fire, Decemberists, Brazilian Girls) reached their popularity within the last few years while the ones you mentioned have all been around well over a decade, so I can see a cutoff there. The Roots is the biggest name with longevity that you don't mention, but while they've been huge within hip hop for a couple decades, they only became widely known outside of their genre relatively recently.

I consider Jesus and Mary Chain and Crowded House to be big names too, but I have no good perspective on them.