Awoiaf (GoT)

Last Days of the Third Age (LotR)

Warsword Conquest (Warhammer)

Perisno + Prophecy of Pendor (Fantasy conversions with lots of lore and things to do)

Gekokujo Daimyo Edition (Sengoku period Japan)

Anno Domini 1257 (13th Century Europe)

L’Aigle (Napoleonic Wars)

https://www.moddb.com/games/mount-blade-warband/mods?sort=visitstotal-desc

Theres tons of them on Moddb and they’re easy to throw on your game