Which statement correctly explains the aspect “Negation with exception” in the example “مَا جَاءَ إِلَّا زَيْدٌ”?

Qasr by Coordination, Negation–Exception, and Innamā

• Scholarly analyses of innamā — Only; indeed no more than.
• Negation–exception versus innamā — Zayd is nothing but a poet / Zayd is only a poet.
• Negation with exception — No one came except Zayd.
• Coordination and reversal — Zayd is a poet, not a writer.