Polls almost exactly like this have been popping up fairly frequently lately, so going off how those polls went, I'm going to say the answer is, listed in order of which is most probable, either the Talaxians, the Vaadwaur, or the Vidiians.

So, you know...now's your chance to prove me wrong on that, everybody. :-P

^ Not only have there been a lot of polls asking this question٫most of them have been posted by the same person who posted this one.

It’s a burning question—my answer remains Moneans. I am still fascinated by that ocean planet.

The Ocampa

I voted Viddians as it would be interesting to see them again if it’s true that the “think tank” cured the phage. Otherwise, they are terrifying organ harvesters😱 so…no thanks!

The Moneans’ world was pretty awesome. I hope they had the determination to avert their pending environmental disaster. @JMills095

Viidians would be interesting to see again. I would love to see if they cured by the think tank.