For Furry Fortress, I had a half-plan to make a race of pig-people called Borks (Boarks, Borcs, Boarcs, something like that), going back to the older notion that orcs are like pig-like. Tusks, cloven hooves, snouts, etc. I feel like you could fit that into a game alongside green orcs. Their weapons would be very simple, Squishka is a blunt mace-rod, Chopka is an axe-like weapon, Stabka is a spear.
I always liked the idea of Orcs as a "noble savage" race. Fearsome, but ultimately people of honor, even if their customs seem barbaric to other races. Like Klingons I guess.
Maybe a tribe of orcs that specializes in Orc hybrids. Orcman = Orc + Human, Goborc = Goblin + Orc, Orf = Elf + Orc, Dwerk = Dwarf + Orc, Trock = Troll + Orc, Ogorc = Ogre + Orc, Satorc = Satyr + Orc, Orclak = Gorlak + Orc, Foul Blendork = Foul Blendec + Orc, Gremlorc = Gremlin + Orc, Reachorc = Reacher + Orc, Blizzorc = Blizzard Man + Orc, Cyclorc = Cyclops + Orc, Minotork = Minotaur + Orc, Orpy = Harpy + Orc, Koborc = Kobold + Orc, Ornera = Manera + Orc, Merk = Merfolk + Orc, Plump Helmorc = Plump Helmet Man + Orc. If you can, maybe the various hybrids are all a sort of servant cast that are created by some sort of aristocracy like a High Orc or Wizorc. Depending on your taste in lore, the hybrids could be created with magic (like Oruk-hai) or the old fashioned way, with prisoners. Maybe there's some way to do like a Zombification interaction with prisoners that turns them into Orc Hybrids so that you get a group of hybrids based on the available populations.