Ya know I like the Unmade.
They are a pretty decent villain squad, with some fun gnarly space barbarian designs. They make a good addition to the whole Warworld setting and give Mongul some distinctive lieutenants. If they ever made a Superman videogame, they could make for some good bosses.
Plus as I heard this once before, several of the members actually have backstories, more so than say the Black Order from Thanos.