Which champions should have synergies with each other that are currently missing

I know synergies aren’t really super important in 2025 with BGs and other single champ content, but there are over 300 champs in the game with plenty of cool and useful synergies. But which champions should have synergies with each other that are currently missing in the game. Reasons can be for comic lore, character interactions, relationships, etc.
For example I am surprised that Shathra and Kindred don’t have a synergy together, both are mystic bug themed Spiderman villains
For example I am surprised that Shathra and Kindred don’t have a synergy together, both are mystic bug themed Spiderman villains
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Gladiator, White tiger
Grants Kitty Unstoppable while Phasing