While searching the Internet Archive I came across Slater's Directory which provides a number of directories. The graphic below is one I took from the 1911 list of private residences but there are others which show a list of businesses in which there are also many MacIntyre's.
The Search I used to
locate these directories was:
Directories are available from 1852 through to 1911.
I should add that this list of MacIntyre's are ones that owned their own homes as they didn't list those that rented their accommodation. And so this list will be of the wealthier MacIntyre's <grin>