This is Exiles at War world. Exiles at War is an alt-history fanfiction project designed by a group of friends, set in the world of Equestria at War mod for Hearts of Iron 4.

The Point of divergence is the Griffonian Revolution partially succeeding, the consequences of which affect every continent; from the River Coalition collapsing into war, to the Changellings losing a War against the Olenians before they could strike Equestria, to the Storm King being defeated by the Chirropterrans before he could plunder much of North Zebrica.