The kind of person who’s good at making games and is excited about ancient artifacts makes their own 3D assets that make the most sense for their game.
It depends what you mean: If you mean, they like the idea of 'ancient' and 'artifacts', they may make up their own. If they like the actual history, then the whole point of the ancient artificats in the museums is that they are actual things from actual ancient civilizations - making something up would defeat the purpose.
Also, as I said, almost certainly they lack the artistry to match what's in the museum, simply because what's in the museum is often the pinnacle of human creativity over millenia.
