I am going to update this thread with Bangladeshi results when I come across them

Individual 1)

South Asia 75%
Chinese 13%
Afghan 9%
Central Asia 3%

2)

South Asia 65%
West Asia 25% (highlighting Iran and Turkey)
Cambodian 10%

3)

Bengali 75.1%
Northern India 3.3%
Central Asia 0.3%
Broadly Central Asian-Northern Indian-Pakistani
8.1%
Southern Indian and Sri Lankan 4.4%
Broadly Southern Asian 1%
Broadly Central and South Asian 7.1%
Broadly Chinese 0.2%
Anatolian 0.2%