JoJo's Bizarre Adventure - the face tho

How does Iggy even know who's Bruce Lee? Why am I trying to question Jojo?

How does some over thousands of years old malleable vampires are named after rockbands that didn't existed before dying? How did Dio have an army of stand users coincidentally named after tarot cards? How did anyone knew about how "Notorious BIG" , a stand that works after his user dies, work if his user didn't die before?
SO MANY QUESTIONS ARAKI, WHY!!