Which Megarian philosophers were most important in the study of logic?

The Megarian school was a significant tradition in ancient logic, known for its focus on propositional logic, modal notions, and logical paradoxes. The most important figures in the study of logic within this school include:123

• Diodorus Cronus: A pivotal logician who originated the "Master Argument," which explored the relationship between possibility, necessity, and time. He also proposed a strict interpretation of conditional propositions, arguing that a conditional is true only if it is impossible for the antecedent to be true and the consequent false at any time.13
• Philo of Megara: A pupil of Diodorus who offered a different interpretation of conditionals. His view—that a conditional is true if it does not currently have a true antecedent and a false consequent—is recognized as the modern notion of material implication.13
• Eubulides of Miletus: A student of the school's founder, Eucleides of Megara, who is renowned for developing logical paradoxes, most notably the "liar paradox". He was also a prominent critic of Aristotle’s philosophical doctrines.1432