Gut Response: No. They are certainly on the list those ripe for discussion, but no.
I'm not sure what you mean by "Genre on the Decline" - not saying you are wrong, but I can't filter that into the analysis without more clarity on what exactly that means.
Also does the band HAVE to be still active - or is that just ONE factor int eh equation?
That would dictate the Answer too.
Assuming we are talking about bands, active or defunct, based ONLY On their output from 1995 forward here is the list of Bands off the top of my head that would be above the Roots on that list in no particular order:
- Nine Inch Nails
- Beastie Boys
- Wilco
- Tribe Called Quest
- The Flaming Lips
- Godspeed You Black Emperor
I meant this as an "at the bar" discussion. I don't know that there's really a "best" as it's all subjective. No wrong opinions (well, except Nickelback and Hoobastank.)
When I just said that Rock was a genre in decline, I don't mean "Rock is dead", there's lots of great rock bands out there today, just that it means less culturally than it did in the 90s, whereas Hip Hop as kind of taken it's place as the musical genre of popular music.
Do they need to be active? Not necessarily. And it's hard to tell with some bands that have just faded away *cough* Pearl Jam *cough*
As for other bands that folks have mentioned:
Nine Inch Nails - Yeah, definitely in the discussion. Is NIN really a band or just Trent? Because if you consider Trent and Atticus Ross' soundtrack work as NIN, you could probably make an argument for them as #1.
Beastie Boys - Are they a band? Sure, but the part that disqualifies them (to me): Their prime years are not from the last 25 years. Paul's Boutique came out 31 years ago. If it’s the last 35 years, they’re probably #1.
Wilco - I love Wilco and think they are amazing. Also, they are
the genre-defining Suburban Dad rock band. Which might make them higher on the list in terms of musical importance.
Tribe Called Quest - Sure. Similar to Beastie Boys, (IMO) their best albums were from 1990 - 1993, which is over 25 years ago.
Flaming Lips - Hadn't thought of them. I don't think they're impactful enough, but if they are to you, why not?
GY!BE - Popularity? Also took a 10 year hiatus.
The National - I love them, but will they have any impact on music going forward? (Spoon and Death Cab probably falls in this category too.)
Nic Cave & The Bad Seeds - Yeah, why not? Lasting impact and popularity though, idk.
Some others to consider:
Daft Punk - Are they a band? I think they could be in the Top 5 if you think they're a band.
Queens of the Stone Age? (Probably should be higher up than I would've thought)
The Strokes? White Stripes? Arcade Fire? Animal Collective? (Seem too hipster, and of a moment, but maybe?)
Sigur Ros? (Probably not popular enough)
Foo Fighters? Dave Matthews Band? Coldplay? (I just threw up in my mouth a little with all these bands. And I like them.)
Ween? (Are they mainstream popular though?)
Maybe Lady Antebellum?
Again, no wrong opinions. (Except Korn and Limp Bizkit.)