Sliding?? I just called 911 because I'm buried in this avalanche!
Apologies, I hate being wordy, I usually try very hard to communicate concisely.

You and I may not completely agree with each other but if we believe in the same God head,

The way is Jesus the Christ, fully God and fully Sovereign,

That we are saved by his will and Grace and the true baptism is of the Holy Spirit we are pretty darn close.
Amen, at least we can find some level of agreement.

Personally I think the vast majority of proclaimed Jews are not Israelites.
My perspective is, It is not up to me to sort them out, God will sort them out, and it won't go well for whosoever among them might be fakes. The true Israelites, I believe God will call them home whenever it is their time to return. Some may have returned already. Perhaps more than you think.

Only 1/3 will make it through the fire and be "refined," I believe that the 2/3 that don't make it are the bad ones. That would include whoever among them would not accept Jesus as the Messiah as well as any who might be "fake" Jews.

I personally believe that there are people with Jewish genealogy that would have many other "goy" blood mixed in, some might be white, some might be brown, some might be black, consequentially I think there could be many people that are Jews that look very different from each other. This is simply a result of the diaspora. I do not think that they need to have "pure" Jewish genealogy to be considered a Jew. There is a guy that I follow on YouTube named Tal Oran, he is a Jew, he is also brown. He comes from Iraq. He is an Iraqi Jew. They are called Mizrahi Jews. They trace their Jewish ethnicity all the way back to biblical times and the period of the Babylonian captivity.