I'm reading The Dispossessed right now. It's the first of her Hainish Cycle scifi novels chronologically even though it was written after Left Hand of Darkness.

It seemed like a good place to start for her scifi. I really like it.

You can honestly go many ways. I’d recommend Wizard of Earthsea or Left Hand of Darkness depending on if you want fantasy or Sci-Fi. The Word for World is Forest is also great. Her short stories like Those Who Walk Away From Omelas are quick and thought provoking too.

The Left Hand of Darkness. That's her first scifi book I read and fell in love with it. I will add here the review I wrote when I read it:

In this book Genly Ai is sent to the planet Gethen on behalf of the Ekumen, an alliance of human societies residing on far flung planets, to acquaint the inhabitants with the existence of the Ekumen and convince them to join the alliance. The Gethenians are unique: every individual has the potential to be a man or a woman during regular periods of time, referred to as "kemmer". The period of kemmer is the only time when a Gethenian has a defined sexuality. Throughout the course of the book any individual Gethenian is referred to as a "man". The narrative is told through two POVs, both in the first person: Genly Ai, the Envoy; and Estraven, who is the prime minister of Karhide, Mr Ai's liaison with the nation's king. Over the course of the narrative, Le Guin explores a society totally uninfluenced by sexuality which interestingly holds up a mirror to how sexuality /gender permeates every nook and cranny of our social existence. It was however the beautiful depiction of the progression of the relationship between Mr Ai and Estraven that made me fall in love with this book. The complete disconnect between the cultures of the two main characters initially made them misjudge each other leading to dangerous consequences. Later, unexpectedly thrown in together while traveling for days in the icy wilderness, they begin to understand and accept each other for who they are; the story ultimately culminating into it's heartbreaking conclusion. I will end with these beautiful lines: "Light is the left hand of darkness and darkness the right hand of light. Two are one, life and death, lying together like lovers in kemmer, like hands joined together, like the end and the way."

I recently started with the Earthsea series and I'm halfway through. I'll start with the SciFi series when I finish the fantasy one.

I started with Earthsea because I read the original trilogy many years ago.

Without knowing anything about you then I'd recommend The Lathe of Heaven. If you want something more political and sociological, The disposed. If you are queer, then The Left Hand of Darkness shoots to the top of my recommendations.

But Ursula is my favorite author, so I think picking up any of these will be a treat.

https://literature.cafe/post/10596641

I really liked The Dispossessed.

The ones who walk away from omelas is a classic and very short.

The wizard of Earth Sea books are pretty okay.

The Lathe of Heaven is all I've read of her, how does that fit in the pantheon?

I'm not really answering that question as much as adding a recommendation for another author, so hopefully you don't mind.

Check out the Broken Earth trilogy by N.K. Jemisin. Hugo and nebula awards were awarded for novels in the trilogy, and I tore right through them. She has a short story collection that I read first and it really hooked me in. Such a wide variety of worlds, peoples, and consciousness she's able to bring to life. The title doesn't make you think "sci Fi shorts" but I assure you it is, and fantastic! "How Long 'til Black Future Month?"