A user from another forum shared this plot below. The more left they are, the more south asian shifted. Cause southeast asia is just mongoloid mostly with some south asian. philippines is an exemption since they have some spanish mix. All other components like east/se asian, austronesians, etc are all "mongoloid". As you can see some burmese samples approach 60% east asian and 40% south asian so they're sort of intermediates but most of them are around 70-30. Cambodians and malays are close as well.
Phenotypically in southeast asia only cambodians, indonesians, and malaysians show noticeable south asian imo. Burmese and thais despite being heavily south asian influenced dont look that south asian shifted to me. probably cause their mongoloid mix is more northern shifted than the former populations. Oh on the plot above, the mongoloid is described on a southern (top) and northern (bottom) cline. The mongoloid among burmese is the most northern shifted among SEAs.
