Tails with persistence mode, but it's sort of the opposite of what it's intended for, honestly... Still a decent solution though. But I'd recommend you embrace more of the amnesiac mode and use an external USB drive for persistent data.
Discussion
Thanks. Do you know other distros?
Any Arch on OpenBox maybe...
Oh, I'm an Arch fan. I ran it successfully for over two years on an older laptop I had a few years ago. Could resolve all occurring problems by spending uncountable numbers of hours in the Arch wiki and forums. Maybe I'm a little bit of a tinkerer 😁. Today I run a out-of-the-box solution.