Realistically, of the options available, only Alaska and Patagonia are appealing because they are sparsely populated enough in the late 19th/early 20th century that Jewish migrants could swamp the native inhabitants. Every other option is going to have large and probably angry minorities (or even majorities) of non-Jews. Think that the current discourse among the left about Israel is hostile in OTL? Just imagine what it would be like if the paralells between apartheid South Africa and 'Israel' are even stronger AND there is no way to claim that the Jews were the indigenous populace of that land. It would be nasty.
I suppose another potential option is to punish Germany, Austria, and Italy at the end of the Second World War by ethnically cleansing a chunk of all three countries and creating Israel there, but apart from the morality of that action, it could stall de-Nazificiation and I'm not sure many Jews are going to want to be in close proximity to Germany post-Holocaust.
teg