I agree - the rideshare dropoff at DHS is the closest to any Skyliner station - rideshare enters DHS via the bus entrance, not via the general public parking entrance, and the dropoff is just the other side of the bus station from the Skyliner station. Even with having to transfer at CBR, this would be my preferred route, if looking for "the closest drop off point."
The Skyliner IG station is a bit of a walk from the front of either Swan or Dolphin, and even a dropoff at the front of Beach Club would require a longer walk than from the DHS dropoff point.