My problem with the maps is that only in the last one does the green section represent "Palestinian Land", and even this one requires further explanation. The other maps depict quite different values, none of them the same.
The first map purports to show “Jewish settlements" in white, but the green is actually "everything else". It's very hard to know just how much of the green in this map was "Palestinian Land" in the same sense the white is supposed to signify “Jewish land.” Much of it was uncultivated empty desert and hill country owned by nobody. A lot of land was owned by relatively few major Arab landowners who leased to Arab workers. Some was owned by other foreigners, religious endowments, etc. In any case the Jewish-Arab population ratio at this point (1947) was roughly 1:2.
The second map shows the paritition plan proposed by the UN in 1947. Here, the green section depicts the proposed Palestinian state, which the Palestinians rejected, and the white the proposed Jewish state. The Jews didn’t fully commit either way, and both sides went to war pretty much immediately. This map never represented any reality on the ground.
The third map depicts the result of that war. Here, the green sections actually represent territory conquered and occupied by Egypt and Jordan in the course of the war - Gaza by the Egyptians, the West Bank by the Jordanians. These green sections were subsequently conquered by Israel in 1967.
Finally, the fourth map, which apparently shows for the first time "Palestinian land”, although it’s not entirely clear if this refers to sovereignty or ownership - you can’t speak of Palestinian sovereignty in the West Bank (under occupation) or Gaza (under blockade), but ownership is problematic in its own way here.
This is not to deny that the Jews were a minority and became a majority (and through their state the sovereign power) in the land, or to deny the settlement process since 1967. But these maps in the way they are presented are not a reliable guide to the process that brought things to where they are.