What u/VolanteEternity posted. Leather Apron Club wants that website to be much more legitimate for tracking jewish people, with confirmed evidence in support. The website is new, however, and will take time to build up a database. If Wikipedia does censor the early life section, that website could see a ton of traffic, though, to backup what Wikipedia removed.
If you can't find legitimate info on jewish ethnicity, just go by their behavior, ideas, words, and physiognomy. It's a really good indicator and when you get good at it, works almost every time.