Forgive me for saying so but you seem to have a very strong opinion of something you have never heard of before.
All this information is readily available, Your library, Google, Wikipedia perhaps, even the Bible is a good source of information on the origins of the Hebrews and those various different people who are known as Jews.
Perhaps, as an example of non Hebrew 'Jews" I would suggest looking into the Khazar people.
There are many opinions, both true and false, but the facts speak for themselves.
Assuming you are Japanese, would it surprise you that there are Japanese people who are recognized as Jews?
You would probably find the subject fascinating, I do.