The Lists of the Twelve

Matthew, Mark, Luke, and Acts each give the twelve (Matthew 10:2-4, Mark 3:16-19, Luke 6:14-16, Acts 1:13). Peter is always first. Judas Iscariot is always last, and Acts omits him because he is already dead. The sons of Zebedee stay together. The rest move a little in order, which is what lists do.

Two names change clothes.

Matthew the tax collector is Levi the tax collector (Matthew 9:9, Mark 2:14, Luke 5:27). Mark calls him the son of Alphaeus. That does not make him James the son of Alphaeus. A father's name can be shared.

Thaddaeus in Matthew and Mark is Judas the son of James in Luke and Acts. Some copies of Matthew say Lebbaeus. John points at him as "Judas, not Iscariot" (John 14:22). One man, more than one name. Not a thirteenth apostle.

Simon is the Zealot in Luke and Acts, and the Cananaean in Matthew and Mark. Cananaean is from the Aramaic for zealot. It is not "from Canaan."

Bartholomew is a father's name: bar Talmai, son of Talmai. John never uses it. John has Nathanael of Cana, brought by Philip (John 1:45-46, John 21:2). The church has long read them as one man, because the lists and John would otherwise not match. That reading is reasonable. It is not a verse that says "Nathanael, who is Bartholomew."