I assume you've noticed that not all people are the same. Neither are the 4 gospels (5 if you include Romans).
We come from different backgrounds. Some of us grow up hearing the Bible stories... others come across the truth of the universe along their journey.
Matthew: The Gospel to the Jews. Those who knew the Old Testament prophesies. If you've been in church leadership for a long time, you should read Matthew, along with it's warnings to religious leaders. This version also clearly links Jesus to the Old Testaments promised Messiah.
Mark: The first gospel written, and likely to the Romans. The early church was busy spreading this good news. As a result, all the Jewish customs are explained so that the reader might fully understand the message. Sometimes we need this help too. Mark also makes it clear what the cost of following Jesus in a secular world with it's power struggles can be.
Luke: The only book of the Bible written by a gentile. As a result the minorities of Jesus day come to the fore... it includes the poor, the women, the outcasts. It's the only one with the story of the prodigal son and the good samaritan. It is also my favorite Gospel account.
John: Unlike the other gospels, Johns tells us his purpose of writing - "but this is written that you may believe that Jesus is the Christ, the Son of God, and that believing, you may have life in His name. This books describes Jesus ways and teachings like no other.
And . . .
Romans: Not traditionally one of the gospels of course, but it describes the salvation process in wonderful ways. How we are lost without Jesus, but through his sacrifice we live. Forever.