Here goes (in no particular order)
1) Jack Williams
2) Ramblin' Jack Elliot - I know he's not really considered a composer, but the challenge was "Let's list the top 5 folk 'misicians'" so, to that end, I include him since he was very influencial to folk musicians who came along after him (including Dylan).
3) Woody Guthrie
4) Chuck Brodskey
5) Tim Flannery
6) Gordon Lightfoot
Sorry, I listed 5 in addition to Lightfoot since, obviously, he's a given
