Lines left on the end of the shaft are from the 'Face Driver' used when the shaft was manufactured.
Your two lengths of angle in conjunction with the clamps (I suggest you move them much closer to the spindle so less flexing) already form the part of a 'puller' that will be a far better job of dismantling than any press would do.
If you cut a couple of notches in the webs of the angle either side of the pulley then the heads of two long bolts can be trapped under the webs. A stout plate with two holes and a bit of packing (a few washers even) on the end of shaft should be enough to place substantial pressure to get the pulley moving.
One tip. No need to tighten the two bolts to the point of straining or bending anything, once you have loaded up the end pressure use a hammer to shock the shaft/pulley.
Ian P
No need for a club hammer just to apply the extra jolt
Edited By Ian P on 01/07/2023 14:53:02