"Jew" is not a religion
then why didn't you answer the question (in #4):
What was the religion of John the Baptist, if you had to categorise it?

"Jew" is not a religion
then why didn't you answer the question (in #4):
What was the religion of John the Baptist, if you had to categorise it?

did. It still does not change the fact that the questions in OP was not answered in #4. Oh well....
Orang, you are not going to get out of this looking good. Better give up, and maybe reread the answers you've been given, as well as perhaps the Wikipedia pages on Judaism, the history of baptism, and mikveh.
Poor Orangutan.
I'll spell it out for you. "Jew" is a noun referring to people of the Jewish faith. The Jewish faith is more usually called "Judaism." Jesus and all his early followers were observant Palestinian Jews.
Furthermore, the reason I laughed at your notion that John the Baptist could be a "Catholic" (a name that wasn't applied to a church until the Middle Ages) is that John was born before Christ and died before Christ died. There were no "Christians" until after Christ's death and (alleged) resurrection.
(And, yes, this post is condescending as hell. But let this be a lesson to you not to post on subjects it's crystal-clear you know much less about than your average 4-year-old. Really. )