[bryanlarsen]

"the only settled populations of those groups outside of their home countries, such as Iranian Jews and Druze."

Rural Alberta has Druze communities, let alone Toronto.

"and the remainder is Asian"

Not true, a significant portion of the "other" category in Toronto is Arab and African. Not to mention the fact that "Asian" itself is a highly diverse category.

"Toronto was basically white until a few decades ago"

Exactly. Toronto's hugely diverse population is quite young, meaning it is much less assimilated.