Which concepts specifically? You're going to say jews invented families?
One, who cares if Latinos are not White? They're more devout in their Christian faith than the average /pol/ tard LARPing as a "traditionalist"
As for concepts invented by the Israelites and upheld by traditionalists, I can name a few...
1. Abrahamic monotheism (One God as opposed to an entire pantheon)
2. The notion of homosexuality being seen as "degenerate" (European Pagans were gay as fuck, for the Greeks, Romans, Celts, and certain Germanic tribes, the real dynamic was "Top/Bottom" as opposed to the Israelite notion of "gay vs. straight". As long as you topped and provided an heir on the side, it was okay to be gay among ancient White pagans)
3. The overall sex-negative and austere "anti-art" and (for lack of a better word) "no fun allowed" mindset and approach most traditionalists have, and the notion that the mere feelings of joy or pleasure are degenerate sins worthy of damnation.
This is more evident in Protestant traditions, who tried to remove any pagan influences that were kept by the Catholics such as Christmas (basically, the Protestants wanted to Make Christianity Judaic Again)
Nuclear families existed in pagan societies and also exist in Eastern cultures where Abrahamic traditionalism never took root.
The existence of nuclear families is not dependent on Christianity or any other Abrahamic faith such as Judaism or Islam.