Where can you find all the followers?
I have found Raving Fan and Bunshido. I don't know where to find the others
If you go down to the dock and get past the wind, rafts, or jump to the mad chimera. There is the foreman down under the bridge or in the crevasse. There is now the giant rat once you defeat them in the sewer(v4.0+). Lastly, the beer keg guy that you encounter if you touch his barrels at the town gate. In the change notes for v4.2 they name someone charlotte so that could be a new npc or follower too.