I am not that familiar with this forum to know for sure that your statistics are correct but not everyone who holds some of the opinions in your two long lists makes them antisemites. So, for example, I believe Israel was founded on stolen Palestinian land and I also believe Israel for its occupation of Palestine, the West Bank, including East Jerusalem, and Gaza, thus assigning responsibility for the continued conflict only on the Israelis. I am not, however, antisemitic.
I didn't say that people who held these opinions were anti-semitic. I said it was not valid criticism of Israel. But since you brought it up....
Let's talk about stolen Palestinian land. What land was Palestinian land? Why was it Palestinian land? What made it Palestinian land?
What land was Israeli land? Why was it Israeli land? What made it Israeli land?
If land somewhere in the territory is empty and open for building upon is it Palestinian land or Israeli land? Can Arab Palestinians build on that land? Can Jews build on that land?
If you can convince me that you give the same rights to both peoples I will agree that you are not delegitimizing Israel and the Jewish people. I don't think you can, but give it your best shot.
Based on my limited experience on internet boards, I am convinced that nothing I write will persuade you to change your opinions. In other words, I would likely waste my time and yours. As a courtesy, I will answer your questions as best I can:
What land was Palestinian land?
Palestinian land is the land of the Palestine.
Why was it Palestinian land?
It was Palestinian land because it was named so.
What made it Palestinian land?
It was made Palestinian land by the people in classical times by Greeks and later Romans as the province of Syria Palaestina.
What land was Israeli land?
Israeli land was (and is) the land of the Jewish state of Israel.
Why was it Israeli land?
It was (and is) Israeli land because it forms the Jewish state of Israel.
What made it Israeli land?
It became Israeli land when the Jewish state of Israel was founded in 1948.
If land somewhere in the territory is empty and open for building upon is it Palestinian land or Israeli land?
Whether land is Palestinian or Israeli depends on whether it is in the Jewish state of Israel or the state of Palestine.
Can Arab Palestinians build on that land? Can Jews build on that land?
Yes, Arab Palestinians and Jews have the moral right to build on land in the Jewish state of Israel and in the state of Palestine. Unfortunately, the Israeli government restricts Arab-Israelis from building in Israel and Palestinians under occupation have onerous restrictions from building in their homeland. Palestinians who build in Gaza have homes and infrastructure of schools and hospitals and water treatment plants destroyed every decade or so.