Warhammer Age of Sigmar has now been around for nearly ten years, and despite initially being received very poorly due to it replacing the much-loved Warhammer Fantasy, it has stayed true and managed to distinguish itself as a truly unique setting within the wider Warhammer IP. While many of the factions within Age of Sigmar are carried over from Fantasy, none made the change across IPs untouched. Even the simplest armies have now been given an extra layer of lore and complexity, meaning no matter a player's interest they are bound to be rewarded with lore and interesting armies.
Source:https://www.cbr.com/warhammer-age-of-sigmar-factions-guide/