I think it's best to be positive and stick with bands that maybe didn't get the sales or recognition by the general public that their talent and musical metier deserves.
1. Echo and the Bunnymen, more musically interesting and edgy than their contemporaries U2, Simple Minds and The Cure who managed to elevate themselves to stadia stardom, the internal band dynamics that drove them also destroyed them, at their height McCulloch ego made Bono and seem like a shy retiring type. Drugs and death ultimately ended their time as perennial musical dauphins and the reformed Bunnymen have never neared the heights of their original output.
2. Talk Talk, the influence of Talk Talk and Mark Hollis is writ large through contemporary music, at their sales peak they were seen as non-conformist, non-genred, almost MOR and safe, neither past or present, but their, since then the re-evalutation of their oeuvre has shown them to be the nascent influencers and musical path finders that seemed hidden in their commercial pomp.
3. That Petrol Emotion, of the time were the best of their genre, a hard edged political new wave alternative to the Jesus and Mary Chain, Primal Scream, Happy Mondays type bands that rose to prominence, they balanced accessible pop sensibilities with flint hard alternative music, as well as treading a deliberately provocative politic stance on Northern Ireland that saw them as outliers to the main stream.
4. Joy Division/New Order, there isn't a band that exists today that will not have been influenced by one or the other, reinvented music, created the indie dance genre, Joy Division are the root through which all modern guitar bands grew, the demise of Factory, whilst keeping a public focus on JD/NO in a way detracts from the musical soundscapes that can be traced back to both of these bands, both bands changed the way music was, made, produced, promoted and ultimately their DNA is on just about everything released in the last 20 years.