The authoritative record of the unique models produced in Canada is Canadian Cars, 1946-84, by R. Perry Zavitz. Not exactly a “can’t put it down” tome, but quite comprehensive and well-researched.
Some other oddities, in addition to those listed, above: the Frontenac, a Falcon with unique trim, and sold through Lincoln-Mercury dealerships in Canada for one model year, only, 1960. My aunt had one.
Mid-sized Pontiacs, called Acadian Beaumonts, initially, then only as Beaumonts in the later years, used Chevelle bodies-in-white and Chevrolet powertrains, with instrument panels from their American Pontiac Tempest cousins, and unique interior and exterior trim. Acadians were the Pontiac version of the Nova, setting the stage for the Pontiac Venturas, Olds Omegas and Buick Apollos, based on the Chevrolet Nova model of the early '70s.
C-bodied GM cars of that era were imported CBU from the U.S., but the tariffs imposed made the price gap between, say, the top-of-the-line Pontiac Parisienne, and the Olds Delmont 88 of the same year, far wider than was true south of the border. Similarly, it was possible to order a Tonawanda-built 409 in your Canadian Pontiac, or a full-size Chevrolet, but the duties drove the option cost up to levels that very few would do so. 327-250 hp hydraulic lifter small blocks were pretty much top of the line for performance amongst the Canadians of that era.
Ford also badged light-and-medium duty trucks as Mercurys, up to 1968, I believe.