Wanted to comment/continue on this article: https://www.dcuniverse.com/news/easter-eggs-you-may-have-missed-young-justice-season-1/
One other thing I noticed in Season 1 was when Superboy went against Project Match, the clone lasered the “S” onto himself, but backwards. I think that Match was supposed to be a reference of Bizarro.
Another thing I found out was with the runaway group from Season 2: Virgil, Ed, Tye, Asami/Sam. The latter 3 had counterparts in “Super Friends” that were created for the show to increase diversity. The latter 2 had counter-parts in both “Super Friends” and in “Justice League Unlimited”.
In “Super Friends”, there was a character created called Samurai, whose powers mostly involved manipulating wind, and in JLU, there was a group called the Ultimen, with a character who could manipulate wind. His name: Wind Dragon. Sam is supposed to be based off of Samurai, except she uses Chi over wind.
Tye Longshadow is based off of Apache Chief in “Super Friends.” However, his power involved himself becoming giant. This was the same as the Ultimen character Long Shadow in the JLU series.
Ed Dorado is based off of El Dorado in “Super Friends”, who had a variety of powers. Teleportation was one of them.
Static did not exist in “Super Friends”, but a character with similar powers was created: Black Vulcan. Similar to Static and Black Lightning, Black Vulcan had powers of electricity manipulation. Black Vulcan also had an Ultimen Counterpart in JLU called Juice.