As I stated, I am not totally offered on this analysis, for the reason that I do think plenty of people possibly use "free of" and "free from" interchangeably—other than in the situation of "free of cost"—or arbitrarily desire 1 or the other sort to specific a similar plan, with https://drive.google.com/file/d/14hrpBHBebZB7SuXhV7sUnMwZIuxqpI1J/view?usp=sharing