That's because you didn't come down to Kingston... I told you you should! Seriously though, there's no shortage of pancakes in Ontario IME.
On hashbrowns - I've found they tend to be in US chains, I find, but there are all kinds of variations on homefries. But you are right, mushrooms don't seem to be that common in breakfasts.
If you'd told me there would be pancakes maybe you'd have tempted me to make the detour! Seriously, it would have been great to meet you. Shame it was too far off route.