Which expression chiefly uses its relative clause to identify an otherwise unnamed person?

Defining the Subject by a Relative Pronoun: Purposes and Rhetorical Applications

• “The one who wronged the weak was rewarded,” in an ironic setting
• “The one we met yesterday is a teacher,” when the meeting is remembered
• “The one ignorant of medicine prescribes drugs,” in criticism
• “Those who defended the oppressed are honored,” in praise