No other GL villain with Super Friends cred, unless you count Solomon Grundy, which I don't. But there are iconic GL villains from Star Sapphire to the various iterations of the Manhunters. There was also a human Red Lantern at one time named Rankorr. On the alien side, I could see Larfleeze working with the Legion more easily than I can see the current version of Sinestro doing so.