I've come across a fanfiction where the android OC is a creation of a mad scientist. The story is titled 'The Androids Origin'. It shows the journey of the OC from being a tool of the scientist to finding its own purpose and joining the Young Justice team. Additionally, there are some fanfics that explore the relationship between the android OC and the technology in the Young Justice universe, which can be really fascinating to read.
Well, there's this fanfiction called 'Mechanical Justice'. In it, the android OC has some really cool powers that are unique to androids. It's exciting to read as the OC uses these powers to help the Young Justice team in various battles. There's also a fanfic where the android OC is initially seen as a threat but then proves to be an invaluable asset to the team, though I can't recall the exact name right now.
One great 'Young Justice Android OC Fanfiction' is 'Android Ascent'. It has a really interesting plot where the android OC has to deal with identity issues while fighting alongside the Young Justice team. Another one could be 'The Android's Alliance' which focuses on how the OC forms unique bonds with the other members.