Found this on the internet. It is from 2015. Will be having a closer look at the other than Shell brands.
Not quite sure about the labeling on the pumps. That might have faded away.
As an update to this, Feb 15th, 2019; I checked on the Pure gas app and they list a lot of Esso 91 as well as the Shell 91 so there may be some truth that the higher end gas is ethanol free. To be verified.
Shell 91, (or V-Power 93) and most of the other brand "premium" gasolines do not have ethanol. The Canadian regulation requires 10% ethanol average in its fuel, by volume sold. So your lowest tier (usually 87 octane) will have 10% to 15% ethanol in it. Most people buy this as it is the cheapest (often 10 to 12 cents/L less than the premium). The mid-range gas (89 octane) will have 5% to 7% ethanol. Let's say that by this point 95% of the people have bought gas with ethanol in it. This leave the other 5% able to buy ethanol free gasoline and still have the retailer meet the regulatory requirements.
It is also mandated that gasoline with ethanol be labeled as such. When you go to the pump, there will be a sticker beside it saying "may contain up to xx% ethanol." The ethanol free ones will also be labeled.