There was a time when asking for religous affiliation was fairly standard, though also often associated with prejudicial practice.

Forms of address --- Mr., Mrs., Miss., Ms., and often professional titles (Dr., in German Ing. (engineer), esquire (lawyers), Reverand, etc.) is at least fairly common if not entirely standard practice.

I suspect, again, some motivation on the part of a requestor. A magazine's circulation department, for example, might want to know the number of lawyers and doctors among its subscribers as a proxy for advertising value.

Many business information request forms provide detailed rosters of who you are, what you do, and your company title. For similar reasons, I suspect.

(I also feed those bogus information as a matter of course.)