Guess the accent from the description. Either name the country it originates from, or the name of the accent itself.
I will most likely make some mistakes, and stereotype some accents. Let me know about any suggested changes in the comments.
I don't know if I'd say it's Standard for Canadians to pronounce words like that. There are certainty those who do but you might be surprised at how many don't. Many of them sound just like most Americans.
Its standard for small town Canada. In larger urban centres, pronunciation sounds closer to a "general" American accent. I grew up in a small town and teach English in a large urban center, immigrant kids are often amused when my accent comes out --- cot, caught, roof, about, out, house, aunt, etc
Queen's English. Very few people speak it. Most who try to speak a "proper" English accent speak the posh accent, which is a strained and overdone attempt at RP.