As of now (and how updated the spreadsheet is) here is the unofficial numbers (5 or more) on Artists chosen:
5: Arcade Fire, Ben Folds, Black Sabbath, Elton John, INXS, Iron Maiden, Miles Davis, Steely Dan, The Kinks, The Police, The Smithereens*, Wilco, Yes
6: Elvis Costello, Metallica, Pearl Jam, Rush, Stevie Wonder, The Cure, Tom Petty, U2, Willie Nelson
7: Bruce Springsteen, Pink Floyd, Spoon, Talking Heads
8: Beck, David Bowie, Neil Young, Prince, Queen
9: Bob Dylan, Led Zeppelin, Radiohead, R.E.M.
13: The Rolling Stones
14: The Beatles
I may have missed someone in the 5s, also very surprised at Beck and Spoon being so high.
*Smithereens all taken by one drafter (I think)