Dean, Cas, Jack and the kitchen and Jack's childhood bedroom as common domain
It's so interesting that Dean and Cas are more often portrayed meeting Jack in his bedroom or the bunker kitchen to counsel him or bring him nourishment, at least compared to his other parental figures (Sam, Mary, Bobby).
Sam is undoubtedly his parent, but he's associated more often with the library and pencils--mentor symbols. Of note, Mary also meets Jack in the kitchen and gives familial encouragement in 14x17 Game Night, but her knife training with Jack takes place in the library. Donatello counsels Jack in his kitchen in 14x15 Peace of Mind, but like Sam, there's visual books in the background. It has an added layer of advice-giving/mentorship.
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In 13x23 Let the Good Times Roll, we get Dean coming to JACK'S ROOM-- NIGHT when Jack is emotionally distressed:
Jack writhes on the bed-- having a nightmare. Dean moves for him-- touching his arm--
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And in 14x07 Unhuman Nature, he's coming to the infirmary to make sure Jack has nourishment:
DEAN: "Brought you some carbs. How you (doin')?"
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In 14x03 The Scar, we get Cas coming to JACK'S ROOM-- NIGHT to praise him for his persistence on a case:
CAS: "I'll make you some soup."
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When Jack is dying in 14x08 Byzantium, we see a record player and vinyl in his room, implying that not only do Dean and Jack listen to music together (per 14x16 Don't Go into the Woods), but they may hang out and listen to music in Jack's room.
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In 14x15 Peace of Mind, Cas again comes to counsel Jack -> JACK'S ROOM-- DAY
"Cas knows this "check in" is the last thing the boy wants."
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BONUS: Dean and Cas are ALSO associated to docks, water, and fishing throughout the series as early as season 4, and that also gets transferred to Jack in two specific script instances:
The first is in 13x14 Good Intentions when AU Zacharaiah gives Jack a vision of Cas and Jack fishing (this originally was an extended scene that occurs post-Zachariah's vision of burning the human side of Jack's family):
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And ofc there's the heartwarming fishing scene that actually occurs in 14x07 Unhuman Nature, with Jack and Dean:
It's just interesting how visually Dean and Cas are portrayed characteristically differently, with regards to Jack. You know?
NOTE: Sam comes into Jack's room once in The Big Empty (Jack winds up annoyed with Sam and actually reads his intentions as a little dishonest).
Sam also comes in during 14x01 when Dean and Cas are both MIA. The village parenting at the time is shared with AU Bobby and Mary, and Jack seems a little irked by Sam's professed "belief" in him.
