http://www.bellaonline.com/articles/art28719.aspIt lists 4 types. I hadn't heard of the first ("Intuitive"), and the fourth, "Form," I've only heard of in conjunction with "Compass."
This excerpt describes the two I was talking about:
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Black Hat Sect Feng ShuiCommonly called "Black Hat feng shui," or "BHS feng shui," this is one of the most popular forms of feng shui, especially in the USA. Developer Thomas Lin Yun combined traditional feng shui with concepts borrowed from Buddhism and Taoism. He simplified the design guidelines, and discovered immediate success when he applied them.
The Black Hat school uses a traditional nine-section grid to assign design principles within a home or office. Instead of using compass directions, BHS feng shui starts with the location of the main door to a room or building, and organizes design elements relative to that.
Compass SchoolAlso called "Traditional School," the Compass School is thousands of years old. It uses the Eight Trigrams of the I Ching and other important tools to determine the innate flow of energy in a home or office.
As the name suggests, the Compass School relies on compass directions--and calculations using 24 subdirections--to determine the best design concepts for each area of a room or a building.
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http://www.bellaonline.com/articles/art28719.asp