I hope I'm wrong, but I don't see any evidence in Scripture that states Gentiles will be saved after the Rapture. In fact, I see evidence of the contrary. To me it seems that the Rapture is more of a climatic end to the Age of Grace/Church Age which God used to make Israel jealous and return to Him by bringing salvation to the Gentiles (Romans 11:11).
There is also the analogy of Noak's Ark where the door (of salvation from the flood about to come) was shut by the LORD (Genesis 7:16); Romans 11:25 mentioning a "fullness" of the Gentiles; Revelation 10:10 most likely symbolizing the idea of the Rapture is sweet, but once "digesting" what comes after (end of salvation for Gentiles perhaps and wrath of God poured out) that it become sour; and Revelation 7:4-8 showing 144,000 Jewish people saved. Plus, I don't see a reason for God to save Gentiles after the Rapture because God will focus on Israel. I hope I'm wrong because I want my family to be saved.