The Clone High references are clearly close to the hearts of Phil Lord and Chris Miller, but they definitely aren’t the only ones featured in Spider-Man: Into The Spider-Verse.
Hell, if you look at the television being watched by Uncle Aaron when he is introduced you’ll notice he is watching Donald Glover on an episode of Community, which was a huge source of inspiration for the creation of Miles Morales.
As we’ve written about, there are fake Seth Rogen and Edgar Wright movies that are advertised — titles Hold Your Horses and From Dusk Till Shaun — and if you pay attention you’ll notice that the number 42 appears a lot, which is a number important in the history of Marvel Comics, but also itself a reference to A Hitchhikers Guide To The Galaxy.