There are also shuttles, and buses.
Red Coach is one bus line that can connect you. DD has used them several times, and if the timing works out, it's a comfortable 4 hour ride. DD's been well-pleased with their reliability and comfort. Red Coach typically ranges between $40-$65 per person for the one-way trip. They drop you off across the street from MCO, with a free shuttle to your airline.
If the planets are in perfect alignment, that could be a less time-consuming option.