I believe S is manual shift, ES has the ESP push button shift, Rubicon has a 499cc instead of 475, full auto, ESP and a Low gear, and Canadian Trail Edition, is the same as a Rubicon except it has progressive shocks and they are adjustable.
Close.If it's a manual shift it's an FM. FE is electric shift and FG is a fully auto CVT with ESP. The FH on the bill of sale is most likely a typo for FM.