I think you can segment the types of homebrewers into the following categories:

Hardcore DIY:
These are people for whom the equipment and in particular the brewing rig is arguably more important than the beer that actually gets produced.

DIY Problem Solvers:
The traditional homebrewer.  Homebrewing began in a time when it was a very small hobby for which very little resources were offered.  Homebrewers had to do a lot of innovating, tinkering and other projects because there were not other solutions.  The theme has morphed a little today where people find unique ways to solve their unique problem dealing with their current equipment built slowly over time or space constraints or something else entirely.

DIY better at tinkering than accounting:
These are the people that embark on DIY projects eschewing commercial systems because they believe there is real money to be saved.  In some instances they are correct, but these are the ones that are usually in the Hardcore DIY camp as I think truly recognizing saving requires significant labor.  I believe many of these don’t appropriately account for the value of their time.  Additionally they can either wind up with an inferior system or end up spending an equivalent amount in parts controllers etc by the end of the build.

Failed Newbies:
These are the people that get a starter kit for holiday or birthday.  They brew a batch or two, it turns out poorly, they think it was too much work/cleaning/time for bad beer and they sell the kit on Craigslist (which is were all starter kits should be bought form in the first place).

Successful Newbies:
The first batches could turn out okay, they have place to keep the stuff, and they brew every so often.  The first batches turn out bad/good/great but they are hooked and graduate into one of the other categories.

Spending Hobbyist:
Those brewers that are willing to dedicate some money to the hobby.  Usually have a strained relationship with the DIY crowd.  Look for brewing setup and solutions that are commensurate with their DIY tolerance which is usually low.

Aspirational future brewery owner:
Pursues hobby with an eye toward opening a small scale brewery.  Should have different goals and objectives while approaching the hobby, but may actually be hiding in one of the other segments.

People who don’t homebrew:
Probably the sane ones and make up a vast majority of the population.