As of right now, The Lore you need to collect to earn the Chronicler Title is just from Forsaken, and there’s been plenty more Lore entries from the Annual Pass and now ShadowKeep. Here’s my idea: Make the Title in Tiers, the more Lore triumphs you complete, the higher the tier. Each tier would unlock a new variant of the Title, such as “Archivist”, or “Scholar”. There could even be titles relevant to certain lore, such as “Scribe”, for Season of Opulence, or “Journalist,” referring to the Black Armory Papers.
How about a Y3 lore title that includes the new lore and Y2 AP lore books, maybe call it "Cryptarch" since most of the recent lore pieces have to deal with Golden Age and Dark Age lore