Hejaz
Historically, the Hejaz has always seen itself as separate from the rest of Saudi Arabia. The Hejaz is the most populated region in Saudi Arabia; 35% of all Saudis live there. Hejazi Arabic is the most widely spoken dialect in the region. Saudi Hejazis are of ethnically diverse origins.
Omani Arabic
Omani Arabic (also known as Omani Hadari Arabic) is a variety of Arabic spoken in the Al Hajar Mountains of Oman and in a few neighboring coastal regions. It is the easternmost Arabic dialect. It was formerly spoken by colonists in Kenya and Tanzania, but most or all of them have shifted to Swahili. There are several distinct dialects of Omani Arabic, such as Dhofari Arabic and Shihhi Arabic.