Fuzz is a HUGE territory. You gotta know what you're looking for. I'd basically divide very very vaguely into the following:
vintage (fuzz face)
vintage high gain (tonebenders, big muffs)
octavias (roger mayer, tycobrahe)
modified vintage (mayo, huckle, more mids or whatnot)
modern (fuzz factory on the more normal settings, my own fuzz)
crazy (E13, art lab, to do oscillations, sythlike, or ring mod-like sounds)
or some have a combination of the above, like goose's noise therapy or the fuzz factory.