Free Step Dodge

Low the most. High holds and mid punch holds pretty close, and then mid kicks after that. Expert high/low holds nearly non-existent.

I tend to use the L hold the most.

People use way, way too much low holds (it began to bug me). I couldn't say which one though, there are people who only hold mid K or high.
Mid P holds still are the most used ones I guess.

Edit : Mid P > Low > High/Mid K

mid punch, high hold, low hold, and then mid kick hold