Don't know why the author of this flow chart (source: Houston Press blogs, John Seaborn Gray) chose to frame it as which band to join, as opposed to "listen to" or "like". I guess its worth it for the sly Arcade Fire reference.
Regardless, I may be using this chart to check out a couple of new bands myself, given familiarity with less than half of list. Both branches of the Neil Young tree (Arkells and The Contantines) are intriguing. I'll definitely check out Two Gallants who are the arpeggio counterpoint to The Black Keys' power chords.