My favourites are:
Adora and Angella at the finale of season 3. The conversations they had in the portal was like actually the sweetest and saddest thing ever. Angella confiding in Adora and Adora being given such motherly love that she hadn't really experienced before. Oh their conversation made the scene so much more devastating-
Catra and Glimmer in the prime space ship. Them leaning against the barrier, back to back, just talking. They laughed about Adora and cake and it was just such an innocent interaction between two enemies who were both in equal amounts of danger from a separate force. The two of them finding comfort in each other, although unconventional.
Glimmer and her dad when they were finally able to properly see each other and hug each other. Oh Micah was so stressed and he really got to see at that moment how grown up his daughter was. Also the way Glimmer just threw herself into his arms. Like she was so happy and relieved to have back after he was chipped and she even had to attack him but now they're finally together and I just loved it so much.
Catra and Adora after Save the Cat all the way until the finale. Honestly maybe my favourite, the emotions between the two of them, the unresolved feelings, the love- And especially the progression of it all. We saw the process of them healing even when there wasn't much time to, because they cared so much for each other and to fix what they had before. They both wanted the other to be okay during the times of turmoil. And the fact that the same person who was pitting them against each other before, was doing it again and yet they completely found each other this time- Ugh, I love them so much.
I love all the characters in the show and all heir dynamics and how complex and layered they are-