This is the other option after giorno beatdownThe Thunderbolt Fantasy insert song was so popular they just straight up made a remix of it the intro theme for the second season. Does that count?
holy SHIT you ain't lying:Adventure 2 Digivolution theme, a great example of how we missed on hearing a great ost.
Edit: Forgot about my first ever favorite insert song, God Knows in The Melencholy of Haruhi Suzumiya. I was like like 12 when I saw this as one of my first anime and it was so unexpected.