Canadian 65 Valiant

Correct me if I'm wrong but didn't the 65 Canadian Valiant come in 2 different body styles - the US style 65 Valiant and the US style 65 Dart?

Yes, for 1965 only.

If they came in the US Valiant style, did the hood emblem that hides the latch spell out PLYMOUTH or VALIANT?

VALIANT, as in Australia. Valiants were sold at Chrysler Plymouth and Dodge dealers in Canada through '66; the cars were not badged "Plymouth" (or Dodge, though '60-'62 models had a "By Chrysler" badge, also used in Australia). Note that some '65 Valiants were imported to Canada from the US to cover a strike; these had US-spec underhood and interior equipment but I don't know if they used US-spec trim. It is likely they wore export trim ("Valiant" rather than "Plymouth").

The Dart-shaped '65 Canadian Valiants had a red-and-blue V Valiant logo in place of the Dodge Fratzog at the front of the hood.

The U.S. '64 Valiant owner's manual has a picture showing how to open the hood. It shows a "VALIANT" nose badge.