This tier list includes 4 stars and 5 stars.
For ascension & talent material farming guides, see links below.
Quick note: The Traveler uses all sorts of enemy drops as Talent ascension material. For Talent books, the traveler uses all books from the respective region. (i.e. Freedom, Resistance, and Ballad for Anemo)
Top Mining Spots
Ragged Records Hidden Quest Guide
Genshin Talents (Skills) Guide
All Liyue Luxurious Chest Locations
Xiao
Nine Pillars of Peace Quest Guide
All Liyue Shrine Locations