YMMV / The Free Design

• Sweet Dreams Fuel: Their whole discography is the embodiment of this trope.
• Vindicated by History: It's really a minor example - the band are still kind of the "best kept secret" of 1960s pop, but they remain big critical favorites, bands like Stereolab (who named one of their songs after them) credit them as huge influences, and they maintain a loyal following that compares them favorably to The Mamas & the Papas and The Beach Boys.