Aristarchus of Tegea could compete with Sophocles and Euripides. Agathon, who tried to reform the tragedy, could try to compete with Evryapides.
The rival of Aristophanes was Eupolis – an ancient Greek (ancient attic) playwright, author of comedies in the ancient attic style. It is known that during their lifetime they really were rivals. Xenocles can also be attributed to the rivals of Aristophanes. Aristophanes considered him a mediocre poet and ridiculed him in his comedy Women at the Feesmophoria. However, in 415 BC. e. Xenocles won a victory over Euripides with one of his tetralogy. Aeschylus is considered the father of tragedy. None of his contemporaries could compete with him.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.