someone else online summarized the genetics part as the following:
Mandelian randomisation studies show that LDL-c is causative in atherogenic plaques 1 and metabolic ward RCTs show that SFA intakes increase LDL-c, while the decrease in SFAs lead to lower total and LDL-c 2.
But yes, almost all nutrition science is a bit inconclusive because of genetic variation.
WHO report
someone else online summarized the genetics part as the following: