Destiny 2 Shadowkeep: Are There Trophies & Achievements? Answered
If you've fulfilled PS4 trophy requirements on PC or Xbox, you'll auto-unlock the platinum trophy upon CS-ing your characters onto PS4. : r/DestinyTheGame
Destiny 2: Forsaken - PS4 trophies to the DLC revealed - GAG
List of all PS4/PS5 Cross-Buy games by Trophy Completion Times! – NODE Gamers