Again, "remembered" vs. "classic." And yes, there is a difference! "Friday" and "Anaconda" are remembered. Are they classics? (Nicki stans don't answer)
I'll admit I was wrong about "Party". I skipped over it on accident and then got a little TOO defensive when I was called out for it.
Looking at that list made me realize that the 2000s were the worst decade in music (though the 2010s are quickly becoming as bad). The quality decline from the 70s/80s/90s is real.
Dancing On My Own is in no way a classic. That is the definition of a FOMO classic.
A classic has to be commercially successful to the point that the average everyman can name it. Like Roman Holiday said, if 8/10 people on the street can name a song from ten years ago, it's probs a classic!