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.
Tunisian Arabic
Before 1980, The pre-Hilalian group included old ("Baldī") Urban dialects of Tunis, Kairouan, Sfax, Sousse, Nabeul and its region Cap Bon, Bizerte, old Village dialects (Sahil dialects), and the Judeo-Tunisian. The Hilalian set includes the Sulaym dialects in the south and the Eastern Hilal dialects in central Tunisia. The latter were also spoken in the Constantinois (eastern Algeria).