Illmatic, It Takes a Nation of Millions..., The Chronic, Paid in Full, Step in the Arena, The Infamous, Ready to Die
All those among others were instant classics and arguably still are.
But there are also tons of albums that seemed like instant classics but fell by the wayside over time.
People swore up and down that MMLP was an instant classic.
I rest my case.
Oh and I forgot The Score, Criminal Minded and probably tons of others.
It's probably more of a challenge to name albums that were considered instant classics but didn't age properly at all. Like MMLP and I would reluctantly throw Cypress Hill in there as well since I have a soft spot for that album but probably couldn't sit through a whole listen nowadays.
So basically for every album that was an "instant classic" there's another album that was called an "instant classic" when it was released that doesn't stand the test of time and only has a few good songs.
I remember Das Efx's first album was considered the hottest thing when it came out, but nobody talks about it nowadays.
I actually still bump Dead Serious and consider it to still be dope and stand the test of time but I wouldn't call it a classic and I don't think anyone ever did.
Well I remember the summer it came out. It got a lot of hype because they had a new style and a new look. But when it was all said and done, the diggity diggity style was a fad and nobody checked for their second album when it dropped in 95.
That wasn't 100% their fault though since their whole style got bit into oblivion once They Want EFX came out. I could actually make the argument that Das EFX changed the whole sound of rap singlehandedly from that point on. There was nothing at all like it before and there was a shitload like it right after. Including a lot of my favorite MC's. EVERYBODY at that time was flagrantly biting Das.