I'm not sure that, if serious, such an approach would be useful? For a start, surely to be meaningful, you would at least have to define by what you mean by a 'Walker'. Most people walk, even if its going to the local shop, or to the other extreme of walking across continents, or more. As an individual, I am somewhere in between but I have no idea where I would fit in? For example, I'm not that keen on all day walks and given a choice, would prefer to have at least an overnight stay or more. Some people like day walking and perhaps would not stay out overnight or might only consider it a few days a year? I wouldn't have a clue how to categorise the people on the forum, I'm sure we have something that links us together, but at the same time I'm sure we are very different as well.
Would we have a personality type, personally I doubt it but I'm prepared to be proved wrong. Am I perhaps an athlete, that ceratainly made me smile!