The Dark Souls II retrospective episode (with a name change because a check on Google Trends has shone that "Dark Souls 2" gets searched for far more than "Dark Souls II" does) is about the world design and level design of the game, along with a bunch of adjacent concepts (like torches, enemy respawn limits, etcetera).
Direct video links:
Hollow Knight Epilogue Ep. 10: Hunting for Grub(s) - https://youtu.be/mSKVpdKKGDk
Dark Souls 2: A Retrospective—Part 4: World & Level Design - https://youtu.be/OH_5Wbq3CJA