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amazing the number of operators who have done YVR-MAN
I don't believe Air Canada has ever operated regular Manchester - Vancouver direct flights either scheduled or series charters.
The long time operators were Wardair via Calgary or Edmonton with Winnepeg weekly a terminator and CP-Air .
Many/most of your lists were Toronto services.
JMC/Thomas Cook served Calgary for a time on behalf of Canadian affairs - This went to Air Transat. Also was a long time year round route with winter skiers in addition to those taking the scenic rail services.
Others missed include BMA 707s again mainly charters to Toronto and later as bmi with AC codeshare 332 service to Toronto and Canadian 763 schedules to Toronto before to Air Canada merger.
Montreal hasn't really has much regular services since the 70's by BA although their has been occasional series charters.
Others included Ontario Air 707s again to Toronto , Nationair, Odyssey, Pacific Western, Quebecair, and Worldways over the years.