This is a choropleth series from the National Library of Scotland in a timeline where James VI never became King of England and the 1707 Act of Union never took place. Scotland remained independent, historically allied with nations like France, Aragon, and Norway.
It depicts which of the official languages of Scotland is the primary one used at home as reported in the national census of 2020. The four official languages are Scottis, Erse, Norn, and Inglis, known as Scottish, Gaelic, Norish, and English by speakers of the final one.
(I have this 'Kingdom of Burgundy' timeline where Mary of Burgundy, daughter of Charles the Bold marries Nicholas, eventual Duke of Lorraine, and thanks to the Lorrainer influence there are no conflicts with the Old Swiss Confederacy and Charles the Bold does successfully get the Kingdom of Burgundy under the HRE that had been promised to him but reneged upon, and this map is in the modern day of that ATL, maybe.)











