Orcs have followed a very similar path as Klingons. They started as "Bad guys . .because bad guys." Now they are something more nuanced. I like the martial Hobgoblin of 5E. You can play them so darn lawful that they seem at face value to lack empathy.
You can try - https://www.adventurelookup.com/adventures/ for a starting place. And then to buy them, you can usually find them on Dmsguild. Dungeon Masters Guild -