The best? Hmm let's see.
Grouplove, Young the Giant, Mumford and Sons, Florence and The Machine, Modest Mouse, Lilly Allen, The Ready Set, MGMT, Adele, Cold War Kids, Foster The People, Fleet Foxes, Ingrid Michaelson, and many more. heartheartheartheart
Florence and The Machine,Two Door Cinema Club, Mumford and Sons, Cage the Elephant, MGMT, Adele, Best Coast, The Naked and Famous, Bon Iver, Foster the People, Panic! At the Disco, La Roux, Lykke Li, 30 seconds to Mars, Of Verona, Husky, Kids of 88, Birdy, and Neon Indian.
I like a lot more, just felt i was being a bit boring there.
Bear hands, geographer, vacationer, cold cave, cut copy, miike snow, the ting tings, of monsters and men, the tough alliance, two door cinema club, capital cities, bag raiders, mndr, holy ghost, the knife, gardens and villa, architecture in helsinki, foster the people, hot chip, tan lines. Those are my favs... In no particular order lol
Updating my list(I'm "misakii" hah, but I don't use the profile, anyways) with a decent number of bands: FOALS(they always will be in my heart <3), The Horrors, M83, Grouper, Girls, The Drums, Lana Del Rey, Icona Pop, SoKo, Lykke Li, One Night Only, A Place to Bury Strangers, Japanther, Gang Gang Dance, HEALTH, CSS, Bonde do role, The Postal Service, Crystal Castles(though i think they're mainstream now haha), Warpaint, Le Tigre, Broder Daniel, Devendra Banhart, Beirut, Tame Impala, The Shins, The Kooks, The Raveonettes, Metric, The XX, The Vaccines, Yeah Yeah Yeahs, Phoenix, The Do, Soap&Skin, Sigur Rós, Jónsi, Right Away, Great Captain!, Princess Chelsea, Priroda(great russian band, y'all should search for their bandcamp profile!!!), Animal Collective, Patrick Wolf, Panda Bear, Ödland, Metric, Margot & the Nuclear So and So's, Little Joy, LCD Soundsystem, Architeture in Helsinki, Freelance Whales, Digitalism, Camera Obscura, Carissa's Wierd, Surfjan Stevens and well, my list is huge, but for now I think that's all. hahaha Maybe one day I make a new update. :3
Half the ones you listed aren't even indie. Since when is MGMT, Adele, Panic! or Arcade Fire indie? I know I shouldn't be nit-picking but those are just too hard to ignore.
Adele was a mistake, I made this list before with allll of the artist I like, not just Indie, and forgot to delete her.
But yes, MGMT and Arcade Fire are Indie. Panic! not so much anymore.
The only reason some people don't consider MGMT indie anymore, is because of Electric Feel, and when the posers blew that song up. Same thing with Arcade Fire and the Suburbs.
Panic! has been non-indie for the longest; forgot to erase them too.