Arc movement in a top-down perspective.

[low shadow]

Animation curves might be a good way to go about this

I was attempting to use them in the past, making an animation curve like this and using the the point distance of the starting point and end point, and the current x/y distance as the timer of how far into the animation curve it should be

I was doing it in a 2D platformer, but it should be able to be applied to the z axis instead of the y