Table 5. The closest populations to Arabs using standard genetic distances (SGD) based on HLA-DRB1* alleles.
| Saudis-B | Emiratis | Omanis-A | Sudanese | ||||
| Population | SGD | Population | SGD | Population | SGD | Population | SGD |
| Moroccans-Ag | 0.0024 | Omanis-A | 0.0411 | Emirates | 0.0411 | Nigerians | 0.0497 |
| Basques-Ar | 0.0057 | Bahrain | 0.0429 | Sardinians | 0.0939 | Egyptians-A | 0.0556 |
| Tunisians-S | 0.0124 | Sardinians | 0.0593 | Bahrain | 0.1327 | Congolese | 0.0594 |
| Saudis-C | 0.0160 | Kuwaitis | 0.0688 | Kuwait | 0.2014 | Egyptians | 0.0620 |
| Ghanouchians | 0.0203 | Tunisians-B | 0.1169 | Famoori Arabs | 0.2377 | Mandenka | 0.0908 |
| Saudis | 0.0258 | Khuzestanis | 0.1213 | Macedonians | 0.2461 | Moroccans | 0.0984 |
| Tunisians | 0.0272 | Tunisians-A | 0.1276 | Tunisians-B | 0.3071 | Senegalese | 0.1044 |
| Kuwaitis-A | 0.0312 | Algerians-Oran | 0.1371 | Khuzestanis | 0.3192 | Bubi | 0.1078 |
| Khuzestanis | 0.0349 | Algerians-A | 0.1407 | Greeks-B | 0.3197 | Palestinians-A | 0.1111 |
| Spaniards | 0.0354 | Algerians-B | 0.1612 | Tunisians-A | 0.3261 | Pakistanis-S | 0.1122 |
| Saudis-D | 0.0374 | Algiers | 0.1639 | Kuwaitis-A | 0.3544 | Tunisians-A | 0.1133 |
| Gabesians | 0.0377 | Saudis-C | 0.1746 | Algerians-Oran | 0.3600 | Libyans | 0.1197 |
| Gabesians-A | 0.0394 | Macedonians | 0.1756 | Algerians-A | 0.3639 | Sudanese-Nuba | 0.1234 |
| Jordanians | 0.0428 | Gabesians | 0.1820 | Greeks-D | 0.3657 | Algerians-B | 0.1315 |
| Algerians-B | 0.0433 | Saudis-D | 0.1820 | Algerians-B | 0.3867 | Berbers-Matmata | 0.1317 |
| Basques-B | 0.0449 | Moroccans-Agadir | 0.1830 | Greeks-C | 0.3927 | Algerians-A | 0.1407 |
| Saudis-A | 0.0450 | Kuwaitis-A | 0.1837 | Turks | 0.3944 | Berbers-Zrawa | 0.1409 |
| Algerians-A | 0.0497 | Famoori Arabs | 0.1894 | Saudis-C | 0.3984 | Gabesians | 0.1413 |
| Tunisians-C | 0.0533 | Moroccans-A | 0.1900 | Algiers | 0.4027 | Jordanians-A | 0.1434 |
| Yemenite-J | 0.0536 | Gabesians-A | 0.1908 | Albanians | 0.4034 | Gabesians-A | 0.1442 |
| Khuzestanis | Tunisians | Syrians-A | Comorians | ||||
| Population | SGD | Population | SGD | Population | SGD | Population | SGD |
| Gabesians | -0.0086 | Gabesians | -0.0139 | Cretans | -0.0001 | Congolese | 0.0519 |
| Orans | -0.0074 | Gabesians-A | -0.0081 | Lebanese-Ar | 0.0050 | Nigerians | 0.0828 |
| Gabesians-A | -0.0025 | Moroccans-Agadir | -0.0080 | Syrians | 0.0076 | Greeks-A | 0.0836 |
| Algerians-A | -0.0015 | Southern Tunisians | -0.0062 | Iranians-Kurd | 0.0100 | Gabonese | 0.0904 |
| Moroccans-Ag | 0.0106 | Algerians-A | -0.0055 | Lebanese-A | 0.0149 | Iranians-A | 0.0947 |
| Tunisians-S | 0.0140 | Moroccans-A | 0.0010 | Lebanese-Y | 0.0151 | Egyptians-A | 0.1090 |
| Tunisians | 0.0161 | Algerians-B | 0.0019 | Iranians | 0.0159 | Iranians | 0.1184 |
| Tunisians-C | 0.0195 | Berbers-Zrawa | 0.0027 | Lebanese-B | 0.0161 | Italians | 0.1222 |
| Yemenite-J | 0.0217 | Libyans | 0.0028 | Iranians-Azeri | 0.0185 | Iranians-Azeri | 0.1394 |
| Tunisians-M | 0.0225 | Algerians-Oran | 0.0033 | Turks | 0.0192 | Iranians-Kurd | 0.1418 |
| Saudis-C | 0.0231 | Tunisians-M | 0.0038 | Iraq kurdistan | 0.0198 | Albanians | 0.1426 |
| Spaniards | 0.0291 | Saudis-C | 0.0061 | Ashkenazi-Jews | 0.0222 | Turks | 0.1428 |
| Saudis | 0.0324 | Tunisians-C | 0.0083 | Iranians-A | 0.0223 | Syrians | 0.1470 |
| Saudis-B | 0.0349 | Algiers | 0.0103 | Palestinians-A | 0.0228 | Cretans | 0.1483 |
| Algerians-B | 0.0353 | Berbers-Matmata | 0.0106 | Italians | 0.0241 | Egyptians | 0.1483 |
| Tunisians-B | 0.0422 | Moroccans-Chaouya | 0.0111 | Turks-A | 0.0288 | Greeks-C | 0.1487 |
| Indians-Delhi | 0.0454 | Spaniards | 0.0126 | Lebanese | 0.0320 | Palestinians-A | 0.1559 |
| Algiers | 0.0461 | Moroccans | 0.0144 | Jordanians-A | 0.0355 | Iraq Kurdistan | 0.1564 |
| Basques-Ar | 0.0471 | Saudis-D | 0.0159 | Lebanese-KZ | 0.0368 | Greeks-D | 0.1594 |
| Libyans | 0.0485 | Khuzestani Arabs | 0.0161 | Greeks-A | 0.0407 | Syrians-A | 0.1617 |
(0.0124) had the closest genetic distances from Saudis, while Emiratis were closely related to Omanis (0.0411), Bahrainis (0.0429), Sardinians (0.0593), and Kuwaitis (0.0688). On the other hand, Sudanese are related to Sub-Saharans, including Nigerians (0.0497), Congolese (0.0594), and Egyptians (0.556).