Historical Rules · 10 August 2018
Rule 205.3j
Official source text from the 10 August 2018 Rules release
Planeswalkers have their own unique set of subtypes; these subtypes are called planeswalker types. The planeswalker types are Ajani, Aminatou, Angrath, Arlinn, Ashiok, Bolas, Chandra, Dack, Daretti, Domri, Dovin, Elspeth, Estrid, Freyalise, Garruk, Gideon, Huatli, Jace, Jaya, Karn, Kaya, Kiora, Koth, Liliana, Nahiri, Narset, Nissa, Nixilis, Ral, Rowan, Saheeli, Samut, Sarkhan, Sorin, Tamiyo, Teferi, Tezzeret, Tibalt, Ugin, Venser, Vivien, Vraska, Will, Windgrace, Xenagos, Yanggu, and Yanling.