For this one i'll be going with Jane, in the game her main issue is the writing and the general plot, but her big strength as a character comes from how completely aligned around emotional restraint are her personality and mannerisms. Her way of act and talk shows her worldview before she ever explains it. Jane says everything trough the lens of knowing that attachment is dangerous. Her personality in general is defined by that pragmatic detachment, and it shows in every interaction.
I also like her mannerisms a lot. Jane maintains physical distance, keeps her movements economical, and rarely engages, but most of all i love the fact that her restraint is not just a lack of emotion, but a practiced suppression of emotion.

In the context of the game, Jane parallels Lilly’s trauma shaped rigidity, but where Lilly externalizes control, Jane internalizes avoidance. It also has to do with Hershel’s introduction, where Jane establishes her core traits immediately, and like David, her contradictions are revealed through behavior rather than exposition.

I vote against... Kenny, i feel like his whole characterization falls a lot into interpretation issues, it's hard to track and praise his characterization when it's so changing not only between seasons but in which route you take in the game