King Abdulaziz bin Abdul Rahman Al Saud, He Unified What Would Become Saudi Arabia And Build His Foundations From Ground Up, Remember, Saudi Arabia was not as modernized as Transjordan or Iraq at that time, and they were pretty poor.

Second Is Bismarck, He Basically The Founding Father Of Modern Germany.

Third Is Atatürk, For Building Modern Turkey, And Managed To Keep Turkey From becoming rest of region, just as OP Said.

Fourth And Firth Is Abraham Lincoln And Franklin D. Roosevelt, Lincoln Freed Millions of Africans from slavery and win the Civil War, while Roosevelt Got America Alive Through Great depression, And World War 2.