1. Express walk off gets you off the ship the fastest.
2a. Already have a car in the parking garage. Can be your own, a rental, or a friends. But you will be limited only by the speed at which you drive and if you need to stop for tolls. MCO has a free toll registration program in beta testing right now.
2b. Private car hire. You will have a prearranged pick up time for them.
2c. Rideshare / Taxi. You may need to wait a small minute to ensure that you have one that can carry all of your people and belongings.
2d. Magical Express bus. May need to wait a few minutes after boarding before it departs. Will drive at a slightly lower speed than you will, and may have to make an additional stop along the way.
2e. Picking up a rental car from an agency near the port. Requires you to shuttle transfer, fillout paperwork, load car.
The ranking 2a2e is based on speed, not cost.