"If you applied those same sampling criteria to only white candidates and filtered by the categories that I mentioned, would you see a similar breakdown in the results?"

I suggest you study the science yourself.

Google Scholar is a good resource.

This is a good start for you-

Race differences in intelligence: An evolutionary analysis. Lynn, Richard (2006)

ABSTRACT It is widely accepted that race differences in intelligence exist, but no consensus has emerged on whether these have any genetic basis. The present book is the first fully comprehensive review that has ever been made of the evidence on race differences in intelligence worldwide. It reviews these for ten races rather than the three major races (Africans, Caucasians, and East Asians) analyzed by Rushton (2000). The races analyzed here are the Europeans, sub-Saharan Africans, Bushmen, South Asians and North Africans, Southeast Asians, Australian Aborigines, Pacific Islanders, East Asians, Arctic Peoples, and Native American Indians. (PsycINFO Database Record, 2016 APA) https://archive.org/stream/RichardLynnRaceDifferencesInIntelligence/Richard%20LynnRace%20Differences%20In%20Intelligence_djvu.txt

THIRTY YEARS OF RESEARCH ON RACE DIFFERENCES IN COGNITIVE ABILITY https://www1.udel.edu/educ/gottfredson/30years/Rushton-Jensen30years.pdf

Whole Brain Size and General Mental Ability: A Review https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2668913

African Blacks Average IQ 67 The average IQ of sub-Saharan Africans Intelligence 38 (2010) 21–29 Richard Lynn and Gerhard Meisenberg September 25, 2009 www.iapsych.com/iqmr/fe/LinkedDocuments/lynn2010.pdf

Brain size and cognitive ability: Correlations with age, sex, social class, and race https://link.springer.com/content/pdf/10.3758%2FBF03210739.pdf

RACE, EVOLUTION,AND BEHAVIOR: A Life History Perspective http://www.europeanamericansunited.org/school1/Eugenics/Rushton/Race_Evolution_Behavior.pdf

ETHNIC GROUP DIFFERENCES IN COGNITIVE ABILITY IN EMPLOYMENT AND EDUCATIONAL SETTINGS: A META-ANALYSIS https://home.ubalt.edu/tmitch/645/articles/roth%20et%20al%20ethnic%20grp%20diff%20in%20cog%20abil%20ppsych%202001.pdf

This is useful too-

The racial IQ and brain size gap is present in infants and fetuses.

The 1.1 SD (16 IQ points) American Black (24% White admixture)-White IQ gap is present by age three. The IQ gap between African Blacks and Whites is 2 SD.

Race differences show up by 3 years of age, even after matching on maternal education and other variables. Therefore, they cannot be due to poor education since this has not yet begun to exert an effect. https://humanvarieties.org/2013/05/26/the-onset-and-development-of-b-w-ability-differences-early-infancy-to-age-3-part-1/

Even before birth, population group differences in average brain size are found from the ninth week of intrauterine life with White fetuses averaging larger brain cases and smaller faces than Black fetuses, with the differences becoming more prominent over the course of fetal development.

Whole Brain Size and General Mental Ability: A Review https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2668913/

Racial differences in head size appear early in life. Head circumference of White children are greater than that of Black children in each age category by a mean of 0.36 cm³ or approximately 0.2 SD. The greater head size of White children, however, is not a function of greater body size because Black children are taller than White children at both 4 and 7 years (Broman et al., 1987). From 7 to 17 years, the White advantage in cranial capacity is 16 cm³. https://link.springer.com/content/pdf/10.3758%2FBF03210739.pdf

Racial-group differences in IQ appear early. For example, the Black and the White 3 year-old children in the standardization sample of the Stanford–Binet IV show a 1 standard deviation mean difference after being matched on gender, birth order, and maternal education (Peoples, Fagan, & Drotar, 1995). Similarly, the Black and the White 2 1⁄2- to 6-year-old children in the U.S. standardization sample of the Differential Aptitude Scale have a 1 standard deviation mean difference (Lynn, 1996). The size of the average Black–White difference does not change significantly over the developmental period from 3 years of age and beyond (see Jensen, 1974, 1998b)." (Rushton & Jensen, 2005, pp. 240-241.)

Farkas & Beron (2004) reported that blacks score 17.2 points below whites on the PPVT in this dataset at age 36 months (p. 478). More recently, Bond & Lang (2012) reported a slightly smaller, 14.6 point gap for 3-year-olds in this dataset (p. 13). https://scholar.harvard.edu/files/fryer/files/testing_for_racial_differences_in_the_mental_ability_of_young_children.pdf

Here's are studies from the military-

The US military has minimum enlistment standards at about the IQ 85 level. There have been two experiments with lowering this to 80 but in both cases these men could not master soldiering well enough to justify their costs.

A couple of points about practical IQ: the US military has been conducting IQ tests for years over huge sample sizes, seeking to determine job fitness. They have determined 2 important thresholds:

1. People with an IQ lower than 90 cannot comprehend (operationalize) written instructions;

2. People with an IQ lower than 83 are not accepted for service as they have negative productivity. I.e., anything they do in any job requires more time correcting the errors they make than the actual productive work they do.

Army General Classification Tests show 1.16 SD (16 IQ points) between American Blacks (24% White admixture) and Whites. African Blacks score 2.0 SD lower than Whites. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.904.7003&rep=rep1&type=pdf http://www.dtic.mil/dtic/tr/fulltext/u2/a104444.pdf

Shut Out of the Military: Today's High School Education Doesn't Mean You're Ready for Today's Army http://1k9gl1yevnfp2lpq1dhrqe17.wpengine.netdna-cdn.com/wp-content/uploads/2013/10/ASVAB_4.pdf