Multiple Elden Ring Nightreign build guides have been published, including those for the Undertaker General, Scholar General, and various other character builds. These guides are authored by different individuals, such as AuraAmile, DigDug, Jt5609, and NizarGG, and are available on the Mobalytics platform. The guides cover a range of playstyles and strategies, including builds focused on specific characters like the Wylder, Revenant, and Duchess.