Shouldn’t really matter that they are discontinued (in fact it’s better bc you know the game won’t ever change anymore), but i never played those games and have no idea about if it would work, you can look for similar games with similar engines in here.
Let’s hope someone that has tried to get them to work responds. I can tell you that i did not find a cloud (custom) profile for City of Heroes but did find one for Star Wars Galaxies (SWGEmu) for vorpX version 16.1.2, which isn’t that old if you factor that your game is probably older. Did not try it though