Nirvana has lost its fleek? And here?? Kurt was so OTS (on the spectrum), no doubt.
But Kurt knew nothing about music. Which is probably why he made memorable melodies, since he wasn't bound by any rules or theory. If a riff sounded good to him, it was good enough to accompany disgruntled screaming.
I'm old enough to remember seeing the self-deletion reports on TV, but not old enough to have bonded with Nirvana's music. In high school I vividly remember some of the older kids being very angry and blaming Love for his death. Years later, if you mention Kurt, they will repeat their conspiracy theories with fresh anger. Of course, it's silly to blame Courtney for Kurt's death. It was the record company that murdered him because he cost them tens of millions of dollars and was worth more dead than alive. Duh.
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But, if you want existential Grungy recommendations, I'm fond of the
Gin Blossoms. Of course, here's another story of a musical genius destroyed by the industry and self-deleted.
Green Day has some weird old stuff if you know what you're looking for. Billy Corgan aged like a gallon of milk, which is made worse by his current neo-Beatnik look. Hrmm. I was more self aware late in the nineties, so I recall the rock resurgence of like Rob Zombie, Powerman 5000, Saliva, and Ra.