True , I have a paper around here somewhere concerning this topic with names of all the groups who wore uniforms similar to KTs' but I can not find it .In Idaho, we primarily use the Chapeau. Much of what is the Commandery uniform stems from Civil War era as after the war there was a big push for naval/military style uniform to be worn in Templar Masonry, and other such chivalric organizations. Thus you see a similarity between Knights of Columbus and the Masonic Templars.