Osyraa, as she was rejected by Vance (Disco, calling out hypocrisy)
Christopher, the crystal grasped firmly (Disco again, duty in the face of suffering)

I haven't watched last season of Discovery, so I forget what these are referencing.

Solum, the wormhole collapsing (Prodigy, defiance in the face of insurmountable odds)
Una and Spock, together on the turbolift (Short Treks, the sharing of embarassing personal secrets)
La’an, as she stares at her watch (SNW, despair from holding in a secret)

Love it. I should have though of SNW phrases myself. There's also one about Ortegas:

Ortegas, I drive the ship! - That fulfilling feeling from knowing your purpose in life.

from https://startrek.website/comment/3056386

I am confused. Where are the first two panels from? I don't remember Tamarians appearing in DS9.

Now that T’lyn is here my only question is why it took until the 4th season for someone like her to show up.

I guess it's because of shorter running time => less time for supporting characters.