Selection of the twelve

Mark 3:13 And he goeth up into a mountain, and calleth unto him whom he would: and they came unto him. Luke 6:12 And it came to pass in those days, that he went out into a mountain to pray, and continued all night in prayer to God. John 6:3 And Jesus went up into a mountain, and there he sat with his disciples.
Mark 3:14 And he ordained twelve, that they should be with him, and that he might send them forth to preach, 15 And to have power to heal sicknesses, and to cast out devils: Luke 6:13 And when it was day, he called unto him his disciples: and of them he chose twelve, whom also he named apostles;
Mark 3:16 And Simon he surnamed Peter; 17 And James the son of Zebedee, and John the brother of James; and he surnamed them Boanerges, which is, The sons of thunder: 18 And Andrew, and Philip, and Bartholomew [1], and Matthew, and Thomas, and James the son of Alphaeus, and Thaddaeus, and Simon the Canaanite, 19 And Judas Iscariot, which also betrayed him: and they went into an house. Matt 10:2 Now the names of the twelve apostles are these; The first, Simon, who is called Peter, and Andrew his brother; James the son of Zebedee, and John his brother; 3 Philip, and Bartholomew; Thomas, and Matthew the publican; James the son of Alphaeus, and Lebbaeus, whose surname was Thaddaeus; 4 Simon the Canaanite, and Judas Iscariot, who also betrayed him. Luke 6:14 Simon, (whom he also named Peter,) and Andrew his brother, James and John, Philip and Bartholomew, 15 Matthew and Thomas, James the son of Alphaeus, and Simon called Zelotes, 16 And Judas the brother of James, and Judas Iscariot, which also was the traitor [2].

Mark 3:20 And the multitude cometh together again, so that they could not so much as eat bread.

The inner circle of Jesus' disciples are never referred to as apostles in John, and John never lists their names.

[1]Bartholomew does not appear anywhere in the gospel of John.

[2]Luke's list of apostles is identical to Acts 1:13.