In Corinth, which two fellow tentmakers did Paul stay and work with?

Answer: Aquila and Priscilla

In Corinth Paul found Aquila and his wife Priscilla, newly come from Italy, and worked with them because they were tentmakers too.

“There he found a Jew named Aquila, a native of Pontus, who had recently come from Italy with his wife Priscilla because Claudius had ordered all the Jews to leave Rome. Paul went to visit them,”— Acts 18:2 (BSB)