You brought up a lot of very interesting ideas that I would like to discuss, but first I'd like to isolate this one point concerning the existence of "REAL physical Israelites in blood line living among us." I see an insuperable problem with that idea. Since the "Israelites" don't know who they are, they are freely interbreeding with Gentiles. This has been going on for over 2000 years, which means that everyone on the planet, except those who live in very isolated areas, are "REAL physical Israelites in blood line" - it's just that we all are only 0.000000000001% Israelite, and all the descendants of the "REAL physical Israelites" that were living 2000 years ago are now 99.9999999999% GENTILE.
A total genetic mix has happened. After the tribes of Israel lost their knowledge of their own identity they could not help but interbreed with Gentiles. They now have been genetically mixed with the Gentiles so thoroughly that the no longer exist as a separate genetic group. They have annihilated themselves by mixing with the Gentiles.
I would be very interested to know what you think of this point. In your research into your own genealogy, how many of your ancestors knew they were of Israel? How many were Gentiles? What percentage "Israelite" are you?