Sechel, there are some goyim – entire communities – who believe in the Torah, keep the 7 mitzvos, and greatly, supremely value Jewish people because of what the Torah says about us. These people are usually former Christians, and while some convert, many see their place in the world as a chosid m’umos haolam; not every goy has the spiritual capacity to convert, as a finite amount of neshomos were by har sinai. They recognize their place in the world, secondary as it might be, as important.
One of my rebbeim sent a letter to the last Lubavitcher rebbe, asking him about good goyim who keep the 7 mitzvos; if their neshoma is still from klipos tamaeos (שאין להם צד טוב כלל), like the tanya says in perek 1.
He who wrote back to him quoting a sefer in chabad as saying that the neshomos of chasidei umos haolam have the same shoresh as that of yidden, though the neshoma itself is vastly different.
I’m using the source quoted by the Lubavitcher rebbe, not he himself as the source for this idea. I don’t remember what that sefer is called.