original: The most prominent among the latter were Marcus Junius Brutus and Gaius Cassius Longinus.
simplifications: The most known were Marcus Junius Brutus and Gaius Cassius Longinus. The most popular were Marcus Junius Brutus and Gaius Cassius Longinus. arcus Junius Brutus and Gaius Cassius Longinus were important. The most famous of the latter were Marcus Junius Brutus and Gaius Cassius Longinus. The best among the latter were Marcus Junius Brutus and Gaius Cassius Longinus. The most important among the second were Marcus Junius Brutus and Gaius Cassius Longinus. The most prominent were Marcus Junius Brutus and Gaius Cassius Longinus. The two most prominent were Marcus Junius Brutus and Gaius Cassius Longinus. Marcus Junius  Brutus and Gaius Cassius Longinus were the most prominent. The most popular among them were Marcus Junius Brutus and Gaius Cassius Longinus.