In 1 Corinthians 16:17, which three men does Paul say arrived and supplied what the Corinthians lacked?

Answer: Stephanas, Fortunatus, Achaicus

Paul was glad Stephanas, Fortunatus and Achaicus had arrived; they refreshed his spirit and supplied what was lacking from the Corinthians.

“I am glad that Stephanas, Fortunatus, and Achaicus have arrived, because they have supplied what was lacking from you. For they refreshed my spirit and yours as well. Show your appreciation, therefore, to such men.”— 1 Corinthians 16:17-18 (BSB)