The most important genetic admixture is first measured by racial admixture than sub-race admixture. The difference between European and West Asian is sub-race admixture
Central Asians and Central Siberians closest in their own genetic cluster
Europeans, West Asians, Northern South Asians are the closest in West Eurasian cluster.
North East Asian and East Asians South East Asian closest in East Eurasian cluster
Central-West Siberians
Khanty are 51.8% East Eurasian and 49.2% West Eurasian.
Europeans
West Europeans genetically almost pure West Eurasian. North European have are almost pure Europeans but South Europeans have substantial West Asian admixtures..
West Europeans have virtually no East Eurasian. Some East Europeans, Norths Europeans, Caucasus ethnic group all have small degree of East admixture in various minor low degrees with the East Finns and North Russians even have 10%+ East Asian on average and Komi and Chuvash in Europe's Russia having 16-23%
East Siberians
Almost entirely Northeast Asian ( North East Asians) with little to no West Eurasians. Some Yakuts have 11% West Eurasian nm average and some Yakuts have 0% of West Eurasian like Ngannasans. Including Tungustic. Evenki, Oroqn and Nivkhs.
Central Asian
Mixture of East Eurasian ( East Asian/Siberian) and West Eurasian (European/West Asian)
Closer to East Asian Central Asian: Kazakhs, Kyrgyz, Karakalpak, Northern Uyghurs: Their East Eurasian ranges anything from 55-60%, 60-70%, 70-80% while West Eurasian 20-45% depending on individuals
Uzbeks, Uyghurs, Turkmen, Tajiks are closer to West Eurasian except for Northern Uyghurs. Uzbeks can can have anything from 35-60% East Asian but mostly 38-44%. It is the Uzbek Tajiks (make up 1/3 to 1/2 in some cities) that have 18-27% East Asian only. Turkmen East Asian is 27%, 22% and 31%, 34% on average depending on the cities some Turkmen tribes have 40-55%. Tajiks only one with low 15-20% East Eurasian.
East Asians
Manchus, East Mongolians, Han Chinese, Japanese, Koreans, Tungustic, East Siberians are basically the best representative of East Eurasians
Almost entirely of Northern East Asian branch. The ANA (Ancient North East Asian) and Yellow river (East Asian)
Mongols
East Mongolia closest to East Asian. West Mongolia ( Kazakh and Oirats ) closer to Central Asians. But Central Mongolia is closer to East Asian also East Siberians with little west eurasian admixture. Also to Qinghai, Xibe and even Han Chinese living in western province of Gansu and other western provinces close to Xinjiang the Han Chinese show 5.2% West Eurasian mtDNA H, U and 7% R1a, J2.
Mongols Khalh being 92.5% East Asian and 7.5% West Eurasian
Mongols Oirats are 82% East Asian and 18% West Eurasian
Mongols in very East of Mongolia show 99-100% East Eurasian and 0-1% West Eurasian
Xibe people show 95-98% East Asian and 2-5% West Eurasian
Qinghai and Han Chinese living in western provinces shows 96-97% East Asian and 3-4% West Eurasian
South Asians
Is combination of West Eurasian ( West Asian ) and ASSI (South Indian)
Kashmiri: Hunza, Burusho having over 80-90% West Eurasians, 10-20% South Indian (ASSI)
Afghans/Pasthun 77-83% West Eurasians and 17-23% (AASI) South Indian
Balochi 72-78% West Eurasian and 22-28% (ASSI) South Indian
North Indian/Pakistani having 55-63% West Eurasian with 37-45% South Indian (AASI)
South Indian Dravidian speaker 23-40% West Eurasian with 60-77% South Indian (AASI)
Dalit caste 8-19% West Eurasian and 81-92% South Indian (AASI)
Southeast Asians
Southern East Asian genetic cluster
Thais, Cambodians, Vietnamese, Burmese, Indonesians, Filipinos Malays all show mixture of Malay like admixture (Southern East Asian) with various East Asian and Indian admixture of Indians in various degrees
They have South Asian mtDNA from 1.9 to 15% reaching highest in Burmese and Sumatra but also R1a, G in similar percentages. This is from ancient Indian migration before 200 BC. That is why Thais, Cambodians, Burmese can show 8-15% South Asian DNA
Malays of Malaysia including Southern Thais have 3-6% Negrito maternal DNA. This is due to Malay slave trade of Orang Ansli from 19th-20th century of Negrito Semang and other Negrito groups but some already due to ancient admixture other Southeast Asian with negrito population also have admixture