All of the “christians” were either Jews (as all of the apostles were) or Israelites from Asia Minor to Spain at that time.
Also, the followers of Yeshua never called themselves “christians.” That moniker was hung on a few of them later in a pagan town where Christos might have been substituted for Messiach, as the apostles called him.
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Acts 11:26.
“Acts 11:26
The Message (MSG)
25-26 Then Barnabas went on to Tarsus to look for Saul. He found him and brought him back to Antioch. They were there a whole year, meeting with the church and teaching a lot of people. It was in Antioch that the disciples were for the first time called Christians.”