titular head/leader/monarch etc
From Longman Dictionary of Contemporary Englishtitular head/leader/monarch etctitular head/leader/monarch etcPGOsomeone who is the official leader or ruler of a country but who does not have real power or authority → titularExamples from the Corpustitular head/leader/monarch etc• She was the titular head of our hareem.• Some thought it odd to see the retired Frank Kush out there, as titular head of the football program.