Based on airplay, I was surprised to not see:
City and Colour
Just to name a few. Again, based on radio airplay rather than personal taste. :)
Anyway, Michael Buble is fairly famous I think. The rest of the people you mention I've never heard of before.
Nickelback is a good rock band. Nothing complicated. Just good ole rock.
Paul Anka, the Weeknd, Nelly Furtado, K.D Lang, Deadmaus, Anne Murray, Michael Buble, ..... the list goes on.