I believe there was a another Miss America published by another company around the same time as Timely's(DC owns the character now so it probaly was Quality Comics). Right now the only other one's I can think of is Yankee Girl, Major Glory, Ms. Victory, and a group of government heroes that appeared in the Outsiders vol. 1 (Major Victory, Miss Liberty, Shooting Star(?), and some others), and how about Liberty Belle does she qualify or were you looking for actual "Flag" wearers instead of "Patriot" archtypes?. Oh yeah, their was Americomando and a Mr. America too. Let me dig into it some more I know there was some more.