What are they?
Trying to characterize 4chan in general, and 4chan/pol in particular, is difficult. Computer savvy misfits, with a heavy sprinkling of racists and other undesirables, for a first cut at it. Some useful skills there, for sure, good at connecting dots at time, but prone to diving into conspiracy theorizing, and not the sort of folks you’d want on a stage with you.
A lot of them are a bunch of bi-polar libertarians.