Related to this topic, here is some recent research including IQ and nature-v-nurture:

1) link to article -
https://www.psypost.org/2022/05/psycholo...ed-states-63091
Psychologists found a “striking” difference in intelligence after examining twins raised apart in South Korea and the United States
by Eric W. Dolan
May 7, 2022
PsyPost

2) pre-publication (Aug 2022) -
https://www.sciencedirect.com/science/article/abs/pii/S0191886922001477
Personality traits, mental abilities and other individual differences: Monozygotic female twins raised apart in South Korea and the United States
by Nancy L. Segal, Yoon-Mi Hur
Science Direct, Journal of Individual and Personality Differences