Each one of the patriarchs listed here are listed for a reason: to show us where Noah came from. Each one of the these patriarchs had other sons and daughters besides those mentioned here, but God singles out these particular men to teach a specific lesson.
Cain’s offering was not rejected because it was the wrong offering. It was rejected because of the condition of Cain’s heart. God warns Cain that he has let sin into his heart and his house. God instructs Cain that he is to rule over sin not to allow the sin to rule over him, but the sin in Cain’s heart was too pleasurable to him.
The lineage represented in Genesis 5 are the leading righteous figures before the flood. The names of these men can teach us about the working of God in a world much like our own, growing increasingly dark as judgment approaches.