I started out as a mild hypermiler, mostly just experimenting for fun.So it would seem that there are several types of hypermiler.
LMPG is way over EPA, and each trip is maximized to keep the LMPG as high as possible, will avoid driving the car when max MPG will not be possible.
LMPG is not considered. Knows how to maximize the MPG for individual trips or tanks, and usually will favor MPG maximizing techniques.
Will occasionally drive for maximum MPG, but tends to drive with the flow to show that the car is not a wimp.
As time went on I became more and more serious (and more and more of a nuisance in traffic) becoming an average and eventually an extreme hypermiler.
Being an extreme hypermiler actually wasted gas because I'd refuse to drive my hybrid in conditions that would yield poor results.
After hitting 80+ mpg for 1005 commuting miles in my gen 1 HCH I felt like I'd done my share of extreme hypermiling.
Since hitting that peak I've back off and now drive "traffic friendly" while still attempting to get the best mileage possible, within reason...