Is there any Joan J raspberry available in Ontario and particularly in Toronto? I could not find any.
I suggest that you contact the Ontario Berry Growers Association to see if they can give you the name of members which sell Joan J raspberry canes. They can be reached at: https://ontarioberries.com/site/about-obga.html. You can also check the website of the Ontario Ministry of Agriculture and Food (https://www.omafra.gov.on.ca/english/crops/resource/berryproprasp.htm).
I also did an online search which indicated that Strawberry Thyme Farms Inc. in Simcoe, Ontario (https://www.strawberrytyme.com/commercialpricelis.html) sold Joan J raspberries.