I heard a pastor state to show Gods plan always included the Gentiles from the beginning, the Gentile name Jesus was chosen over the normal Jewish rendering, Joseph.
I believe this would be accurate, as God told Abraham that all the nations would be blessed in him. And if we think of a Gentile as anyone not from the nation of Israel, then we should conclude that Abraham himself was a Gentile, being before the nation of Israel was formed
I Don't believe that the "choosing" of the name Jesus had anything to do with God's plan to deal with Gentiles all along. Jesus isn't the name used by the apostles anyway. It was:
Iesous, similar to the way it's pronounced in Spanish - (almost) Hey-soos
And I think His Jewish name would have been Joshua
I've thought for a long time that if His name (and surname) were brought into English straight from Hebrew, that we would call Him: Joshua Davidson
In English, Joshua and Jesus seem different, but both originate as Hebrew names, and are the same name.
Both mean "Jehovah is Salvation".
They seem different in English only because Joshua was translated into English from the (ancient or Biblical) Hebrew Old Testament text, while Jesus was translated into English from the Greek New Testament text - and the name transliterated into Greek from Hebrew.
And, at no added expense, the modern (more or less) Hebrew name is transliterated into modern English as Yeshua.
As to the idea that "Jesus" was used in the Bible to presage inclusion of Gentiles; I've never heard it before.
However, that fact (I've never heard it) is evidence of very little.