I think that some of the family relationships depicted in the franchise?
I mean, my heart always warms when I see the tenderness with which Delia treats Ash, and her unwavering support for him. It's especially remarkable how, with the exception of the comic content of some episodes of the original saga, she respects both his physical and mental boundaries, allowing him the personal space he needs to flourish. I also greatly appreciate the dynamics and the lovely interactions between the sibling duo, Bonnie and Clemont, which are always entertaining and endearing. But are these perhaps so obvious and expected to be considered?
Moving forward, I would like to highlight the relationship between Kojiro and Jessie, and also Meowth. This inseparable trio has already proven, more than once, their enduring bond and the genuine sense of care and support that underlies their interactions, and it is certain that they see Team Rocket, or rather, themselves, as a family.
Furthermore, without a doubt, the most "illustrious" platonic bond portrayed in the Pokémon franchise is the extraordinary connection between Ash and Pikachu. This shared love is a shining example of purity, authenticity, and unwavering common effort to endure and overcome any difficulty or circumstance together.
Beyond, as previously mentioned, it is worth emphasizing once again the authentic bond formed between Ash and Misty. This relationship was built in an extremely organic and natural way, from the initial clash of personalities to the exchanges of friendly banters demonstrating a profound understanding of each other. Their reunion in the second episode of To Be a Pokémon Master is marked by a deep shared esteem and comprehension that is even difficult to describe.
In its turn, I dare say that the connection later shared between Ash and Dawn is not behind the ones previously mentioned. Their natural compatibility and dynamics, characterized by encouragement, support, and an authentic desire to see each other succeed, are truly inspiring and heartwarming.
When it comes to games, it is worth mentioning the deep friendship that we were introduced to in Pokémon Legends Arceus between Palina and Irida, taking into account the last one seems to see the first one as a big sister. Sophocles, in US/UM, also has a very strong relationship with Molayne, who, unless I'm mistaken, he calls Big Bro.
Lastly, in my opinion, it is worth pointing out the relationship between Sonia and Leon, given that the former cares deeply for the Champion and is genuinely happy for the success he has achieved. However, she seems to be bothered by the fact that, in her own perception, she has not achieved the level of success she expected and believes others expect from her. This perception, at my point of view, created difficulty in her communicating with Leon, as Sonia seems to feel a sense of frustration and struggle to express her own aspirations and concerns to him, as she believes that he, as the prodigy that he is, may not fully understand the challenges she faces. I don't know, but I think that at the end of the game, after the completion and success of Sonia's own personal journey of self-knowledge, she will be able to readjust her ties with Leon.
Well, I'm not sure their relationship is absolutely platonic, but I believe it fundamentally is. That is, I understand that they have mutual respect and affection for their shared story and for being who they are, regardless of any physical attraction.