Using the verb call in passive voice

BillJ left a comment expressing support for your proposed analysis of "Intikas" as a predicative complement.

I would agree.

I don't think modern linguists would use the term "nominative predicate" because the traditional, prescriptive account of English "case", according to which the subject of a finite clause is in the "nominative case" and therefore a predicate ought to also be in the nominative case, is not considered to be an accurate model of how English grammar actually works (since speakers actually say things like "It's me", where "me" is predicative, but in the form traditionally identified as the "accusative case").