Just to expand in this point…
Most IQ tests for adults lose a lot of precision over 130 (2sd), and they are extremely imprecise over 145 (3sd) — almost to the point that a scores over 145 should simply be labeled 145+.
When I did a deep dive into the IQ test literature 20 years ago, the most reliable correlated predictors for 145+ were standardized tests like the GRE. That said, standardized tests like these have high specificity and (relatively) low sensitivity — that is, very few false positives and many false negatives.
To be clear, I do not endorse the validity of these tests or their interpretation at any level. Learning to be a lifelong learner can take almost anyone a really long way. The analogy to neural nets is that bigger nets dont always make a better model after a point and every human starts at a very priviledged/huge network capacity.