His mother was a Reuters, he spoke Hebrew and he was put on a pedestal. That's all you need to know to confirm he was Jewish.
Why do I bring this up? What importance does it have?
It means there is a huge number of crypto Jews (i.e. those pretending to be Christian or Muslim who in fact are Jewish) who have also shaped the world of ideas you live in.
Your idols, your music, your literature, your comic books, your movies, etc.. are all either Jewish, crypto Jewish, strongly connected to Jews or through an unlikely fluke made it through Jewish controlled establishments.
Subliminally, many people are completely shaped by the Jews, that's why it's so hard for them to believe anything against them or the extent of their control.
Little is also known that Sabbatai Zevi (donmeh jews) were not the first crypto jews.
There are countless records of crypto jews who pretended to be Christian or Muslim. this includes Marranos from Spain and Portugal and later Italy, jews pretending to be Muslim in Morocco and Algeria, same in Iran, China and India.
Those crypto jews are everywhere, donmeh jews are just the most famous one.
You're absolutely correct. The Marranos were the original Crypto Jews. A famous one the founder of the Jesuits, Ignatius of Loyola , was known as a converso, a crypto-Jew of the occult Cabala. And so was his successor Diego Lainex. Most conversos practiced Judaism in secret and were considered “Judaizers.”, aka crypto Jews.
The practice (of crypto-judaism) goes back to the first millennium, Asha Logos mentions an instance in one of the earlier videos of his Our Subverted History series.