Which ethnic group often appears in Dubai in white clothes and white headscarves?

Before the founding of the United Arab Emirates, civil war broke out in Yemen, so many Yemenis fled their homes and came to Abu Dhabi and Dubai. These Yemenis also chose to become UAE citizens when the UAE was founded, and now they mainly work in the police system. Some Palestinian refugees have also been naturalized. Of course, there are also many people who have joined the UAE nationality through marriage. This kind of person is more complicated. It is found all over the world, and even in China, there are a small number of people, so their skin color is different. There are a large number of Indians in Dubai, but when the United Arab Emirates was founded, not many people chose to join the UAE nationality, because at that time, the local area was still a British colony, under the jurisdiction of the East India Company, and its economy was underdeveloped. At present, a considerable number of Indian rich people in Dubai are Indian nationals, such as the boss of Lulu Group, the boss of Gem School and Landmark Group.