No idea.

And when I mentioned the Lava company in India, I did so entirely based on my viewpoint about India's geopolitical positioning - I have 0 information about their phones or if they are any good.

I like that GrapheneOS is open source. I don't like that it funnels people to google hardware. I like that Calyx is open source. I don't like that they stopped supporting all the Chinese hardware. Both of these projects are security (graphene) or privacy (calyx) oriented, and the hardware support of both projects is suss to me (why did Calyx stop supporting all the Chinese brands? Are they anti-China? Why are they anti-China? I don't know).

LineageOS is open source and it supports phones across the spectrum. They aren't focused on privacy or security. But it is AOSP and I suspect a fork that does focus on BOTH security AND privacy AND neutral hardware would be the path I would be most interested in seeing.

Obviously this isn't my expertise and I won't be doing it.

But given I need a new phone (mine is falling out of support) the issue came up again for me.

I'm thinking about using linux on portable non-phone hardware for one-time passwords, camera, microphone, bitcoin, wallets, etc. And use my phone for more prosaic things that I don't care about.