Canada Line: Fully Automated, 2-car 40m trains, branched in suburbs, ~47% underground, rest is elevated, 2-minute headway, replaced a tram plan.
REM East: Fully Automated, 2-car 40m trains, branched in suburbs, ~30% underground, rest is elevated, 2-minute headway, replaced a tram plan.
The only differences are that the REM East is expected to run with thinner trains and that the downtown segment is elevated, while the Canada Line is underground in the inner suburbs/downtown and uses 3m wide trains.
I fail to see how you can't describe REM East as Canada Line-like.