The four winged creatures in Revelation 4 surrounding the throne of God are used to symbolize the four Gospel writers.
Since the earliest days of the Christian Church, they have represented to four writers of the Gospel.

The Winged Eagle - The symbol for John is the eagle, soaring into the high heavens, looking into the bright pure light of God. John delves into the deeper meaning of the person and work of Jesus Christ.

The Winged Ox - Because Luke portrays so winsomely the humble Christ, the symbol used for him is a lowly beast who bears our burdens, an animal also used in sacrifice.

The Winged Lion - Taking its imagery from its opening lines, "The voice of one shouting," or better, "roaring, in the wilderness, Mark's symbol is that of the lion, the king of all in the ancient tradition.

The Winged Man - The symbol for Matthew's account of the Gospel, depicting Matthew's portrayal of Jesus as being the seed of Abraham and David, and through his emphasis on Jesus' teaching, lays stress on our Lord's humanity.

Also creatures in Exekiel 1 thought be drawing the chariot of God.

This image from a Plaque from the 11th century with Agnus Dei on a Cross between Emblems of the Four Evangelists | Work of Art | Heilbrunn Timeline of Art History | The Metropolitan Museum of Art

Four Evangelists - Symbols - Wikipedia

last updated 1 Sept 2016