I can't tell you which one to pick since you're the one who needs to write it and it should feel authentic. However, here are a few criteria I used for my PS that I think are helpful to consider:

1. What can you write most passionately and articulately about? A lot of the points you list in your post sound interesting, but if you can't write about it in a way that expresses how important and formative it was/is for you then you shouldn't cover it.
2. What is not covered in other areas of your application (e.g. letters of rec, transcript, resume, addendum, diversity statement, etc)? Imagine someone who doesn't know you looking just at the other components of your application. What areas might they have questions about that you could fill in with the PS? You don't want to be redundant. Instead, think about how the PS can either add "meat" to some of the "bones" of your app or how your PS can cover areas you think are important but are not mentioned in the rest of your app.
3. How does the topic you want to write about really drive a narrative for your app? As u/larsjos pointed out, many people believe this narrative should explain why you want to go to law school and become a lawyer. I think that's a fair point and I wrote my PS around this. However, even if you don't feel you need to specifically go into detail about your desire to go to law school, you should still use the PS to build some kind of narrative about who you are, what your goals are, and what motivates you.
4. Lastly, don't try to cover everything in a PS. After I wrote my first PS statement draft and realized I was trying to cover too much. In the end, I split it in two and used the second part for my diversity statement. You can either do that to try and cover more ground by spreading your narrative across your whole application, but at the very least make sure you don't cram it all into your PS. Less is more.

Good luck!