A good question. Disingenuous however, as you're asking the wrong person. The ITL has all the documents, a staff (as I've read somewhere) of 500+, and have been researching the whereabouts of Jews in WW II for the last 70 years, so, if you really want to know, ask them.
https://www.its-arolsen.org/en/
But, the joke will be on you, because the ITL won't tell you. It's a secret !
Of particular interest to me is, what happened to Anne Frank? There is no actual evidence that she died at Belsen, and just recently the Anne Frank House revised its story ...
http://www.dailymail.co.uk/news/article-3019322/Anne-Frank-House-museum-Jewish-diarist-likely-died-earlier.html
So, there is no evidence that she did die, as you can infer from the article, and there is prima facie evidence that she did not ... namely this pic shot by the Brits when they entered Belsen ...
[qimg]http://i.imgur.com/FEgmdtq.jpg[/qimg]
Note the girl in the front row, left of center. Here is a pic of Anne Frank ..
[qimg]http://i.imgur.com/xjMPevm.jpg?1[/qimg]
Thus we have a photo of Anne alive when the camp was liberated.
The older woman in the top photo is Luba T.... who oversaw a barracks containing 50 Jewish children from Amsterdam, known as the diamond children, and other Jewish children. After the war she and the diamond children returned together to Amsterdam, and she was introduced to the queen. There is a book about her, the Angel of Belsen, and in it all the diamond children are listed, not including Anne Frank of course. They had a reunion in the 90s in LA. The point is that if the girl in the photo is not Anne Frank, she is another of the diamond children and hence should be easy to name. I emailed the Anne Frank center in Amsterdam, they do respond to questions, and they replied that they knew nothing of the photo or the people in it.