So just a quick suggestion. Sorry if it’s already been suggested.
Ranged attack for stone golems could be big golems throwing small golems (or doing bowling rolls if a medium sized golem is added). The small ones might turn into a solid stone (like a stone resource) when they are picked up and flying through the air and then after impact they pop back into golem form and keep attacking. Of course it would be cute and funny if they were animated while flying as well, with a few different animation or poses to choose from (swan dive, flapping arms, superman and so on), but I’m trying to keep it simple here… ok? I’m trying!
Gameplaywise I think it would give the golems an interesting tactic and be a nice alternative to fights with the more regular set of combat roles. They would have a very limited number of shots, but they would hit hard and be a way to get behind the enemy line to harass archers and healers.