I don't read any specifics into bible suggesting that only Christian's, or Jews will be those included in the rapture, but the bible suggest to me that those who truly love the Lord, and have a Living relationship with Him and are alive at the time of the rapture, will be those which will be raptured. To suggest otherwise without scriptural proof does not have any basis, without God's supporting such a suggestion.
I am one of those Christian who is very interested in the types, anti types and figures in both the old and new testaments and historically in many cases such understanding have some of there understanding rooted in Jewish understanding. There are many figures of speech used in the new testament, which are Jewish in origin and are not properly understood by those who are not interesting in understanding the background to these original figures of speech.
Sometimes we need wisdom to see and properly evaluate these things, to reject biblical understanding, because we don't like where it came from is not always wise. A lot of new testament teaching, particularly by paul is based on old testament teaching and reasoning. It's very helpful to uderstand much of the original basis where this comes from. I can therefore recommend the book "Figures of speech used in the Bible" by Bullinger.