If possible, please attach some pictures, even rough sketches of your idea, because it's not entirely clear from your description...
Added 16 minutes ago
Okay, the concept will be for T2. In terms of shape, the golem will resemble the Earth Elemental - a wide torso and club-like arms. The problem here is filling the model. I think I'll put a glowing sphere in the golem's chest and surround it with bones. This is not as difficult to do as a dense body made of different bones, and it won't look as ugly as a uniform body surrounded by bones.
I'll make the arms from several bones wrapped together, with protruding blades/sharp bones/spikes on the hoops that additionally bind the bones.
Added 18 minutes ago
I looked at the Skyrim bones - not the best material, I don't know how to assemble a torso from them, I'll think about it.
Added 1 minute ago
Perhaps this is the most correct version of a bone golem... but it doesn't suit us at all.

Added 2 minutes ago
I also need to remember this junk - it's simple and brilliant, stick a bunch of skulls on some slimy base and you'll have an arm, a leg, a torso...

Added 4 minutes ago
And this is a classic - D&D (there are the same golems in the game about Iratus), the only thing that bothers me is the ribcage - it's completely the wrong shape, which annoys me.