The original Goldeneye did it’s animation quite different from todays character animation standarts.
They had no skeleton, just the point level animations, which was enough at the time considdering the very low polycount.
If i recall correctly it’s much similar to what quake 1 did back then.
So if you’d want to mimic that correctly, you might want to use morphs only.
Not sure how to get all the animation phases out of the original, since that might require ripping each character with all poses frame by frame.
Frankly i’d just rig the models and animate them on my own.
I’d even say that the guys involved in the chancled XBLA Version redid the animations with a modern skeletal approach.