@creepysora You know what’s great? Rambles about Jyou having great bonds with all the other Chosen Children. Mild spoilers ahead though.
Taichi & Jyou: Taichi needed some time to gain respect for Jyou and Jyou did not like his brash, irresponsible attitude at first, but they did gain a lot of respect and admiration for each other through the course of 01, with Jyou being the first one to actually call Taichi their “leader” and affirming his trust in him. Funnily enough, it is quite a missed opportunity that we never saw them bonding over "Adult life fucking sucks" in terms of how exhausted they are especially at the time of Kizuna (yet at least we saw Gomamon and Agumon spending time in the short, so them actually being somewhat close as adults is not THAT unlikely). I also liked that Taichi was the one who defended Jyou for choosing his responsibilities in Tri over their duties as Chosen Children, because it shows that he does understand where Jyou is coming from after all and that he strongly relates to him as well.
Yamato & Jyou: Yamato was in the same boat as Taichi, thus needed to gain respect for Jyou as well, but once he saw how selfless and brave Jyou could be for his, his brother's sake and in general, his own admiration for him grew as well - not to forget that Jyou was the reason Yamato’s Crest of Friendship activated for the first time! And Jyou actually (novel) canonically thought of Yamato as being his first real “friend”, whom he admired for looking for his own path, while he was still struggling with his sense of “choosing his fate”. So that is the perfect bonding opportunity for them and I will never get over how they flipped that around in the stageplay, making them talk about the difference in “being chosen” and “making choices”, with Jyou being the one who encouraged Yamato to speak his mind. (Also both of them being brothers who struggle with their roles in their respective families should have been explored a LOT more).
Sora & Jyou: Sora and him are literally "Team mom and dad", both feeling way too responsible for taking care of others, and even if Sora had her doubts about his leading capabilities at first, she at least encouraged him and treated him nicely from the start. Eventually, he became the confident rock that she needed herself as well to make her see that she was capable of and allowed to make choices - it's SUCH a wasted opportunity that we never had THOSE two talk about their future fears together, especially since both of them had to face so much pressure (either self imposed or by their families).
Koushirou & Jyou: With Koushirou and him it absolutely depends on what “part” of canon you want to look at, because I actually liked that OG!Jyou never made a deal out of Koushirou being smarter than him, that was literally never an issue (and only came up in the stageplay for comic relief reasons and very briefly in the reboot, where Jyou felt visibly intimidated upon meeting Koushirou for the first time). Koushirou never looked down on him for that either - they're both dorks, who canonically have shown protective sides for each other in 01 and 02 and they should have had more opportunities to bond over trivial things. Unfortunately, Tri felt quite hollow in the way Jyou tried to take care of Koushirou, which made him feel belittled, so it absolutely didn't work out at all... That's where stageplay!Jyou was the superior one, literally the ONLY (human) character after the gate scene in 01 who said he believed in Koushirou. Plus, Koushirou was also indredibly happy to have Jyou around at the beginning, so mutual adoration is definitely there.
Mimi & Jyou: Mimi and him are just so... You wouldn't even think of them as a likely pair outside of "The Beauty and the Nerd" tropes, but I will never get over how nicely they played off of each other in the Dark Master's arc, with him staying behind with her and them finding their "purposes" outside of being "main fighters". That is why their scenes in the second Tri movie actually work, even if they basically admit that they have already been there before - they are able to open up to each other, because they've BEEN through so much already. Mimi admires Jyou for prioritizing what he does and Jyou admires Mimi for being straightforward with what she wants, even if neither of them are happy with themselves at that point in time, struggling with their own ideas of “selfishness”. But they actually do take each other for what they are. Surely Mimi had her own moments of doubting Jyou’s capabilities here and there at the VERY beginning, but that shifted completely by the end of 01; neither of them has to change for the sake of the other or play a role and that is why I feel like they are such a great fit!
Takeru & Jyou: Takeru and him have the biggest age gap, but I am so mad we never got bonding material for them after 02, like... Jyou saved Takeru so many times, Takeru was always so happy to see Jyou and, due to getting saved so many times, trusted in him without a shred of a doubt from the very beginning. Plus, we have the "my relationship to my big brother(s) is (potentially) complicated" angle which should have been explored a LOT more.
Hikari & Jyou: Hikari and him are the least developed due to the lack of screentime together, but it's interesting that SHE was the one who encouraged him to come back and fight again in Tri, making it his own choice, because... Well... She wasn't even THERE when he had to come to that conclusion in the 01. I still maintain that scene would have been SO much more impactful if either Takeru, Yamato, Sora or Mimi had said it to him - probably not Sora or Yamato, because they were having their own struggles at this point, but Takeru would have been PERFECT here.