Considering the oil is pooling on top of the cylinder head/engine block seam and next to the oil cooler. I would check the oil cooler seals first.
If it were P/S fluid, it would be a "greenish" color, P/S fluid is Pentosin CHF11S. Check the level in the P/S reservoir, if it's not very low, then it's probably not the P/S considering looking at the amount of fluid in your pictures that the car is leaking.
If the oil color is dark brown, it's more than likely engine oil.
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