Emirate of Nejd & Emirate of Nejd-Hasa

Flag of the Emirate of Nejd/Second Saudi State (1824-1891) and the Emirate of Nejd-Hasa, also known as the Emirate of Riyadh (1902-1921).

Original Flag:
https://upload.wikimedia.org/wikipedia/commons/thumb/6/62/Flag_of_the_Second_Saudi_State.svg/640px-Flag_of_the_Second_Saudi_State.svg.png

Kingdom of Hejaz (1917) & Kingdom of Hashemite Arabia

Flag of the Kingdom of Hashemite Arabia, from Kaiserreich. It also served as the historic flag of the Kingdom of Hejaz in 1917, and with a different proportion, of the All-Palestine Government. It also doubled in Kaiserreich as the flag of the Arab Federation.

Original Flag:
https://upload.wikimedia.org/wikipedia/commons/thumb/7/77/Flag_of_Hejaz_1917.svg/640px-Flag_of_Hejaz_1917.svg.png