Awful lot of folks with same/similar names in Detroit/Ontario area. Do you have DOB's to tell who's who plus parents/siblings or wife/kids?
As you seem to have some info, could you be a bit more specific about what you are looking for vs what you have? i.e. do you wants census, vitals, etc?
As you may know, census records only show country of origin for immigrants and a state for citizens. Occupation is generally generic vs a name of a business & an address.