Those look like immigration records. Natural born citizens wouldn’t be found there. The page also says the records aren’t proof of citizenship but oddly can be used for employment or government purposes (I’m not sure what other purposes you’d use it for?).
No list is needed since someone is a Canadian citizen if they meet the definition in the Citizenship Act, not if their name is on a list.
I’ve never heard of that. I’d be interested if you have a source.
https://library-archives.canada.ca/eng/collection/research-help/genealogy-family-history/immigration/pages/citizenship-naturalization.aspx
https://www.canada.ca/en/immigration-refugees-citizenship/services/canadian-citizenship/proof-citizenship/search-records.html
Those look like immigration records. Natural born citizens wouldn’t be found there. The page also says the records aren’t proof of citizenship but oddly can be used for employment or government purposes (I’m not sure what other purposes you’d use it for?).
No list is needed since someone is a Canadian citizen if they meet the definition in the Citizenship Act, not if their name is on a list.