As I usually unlock bootloader, I just buy cheap Chinese phones from around 100 bucks, right now I'm using a FreeYond M5 5G. Debloated and rooted. Working like a charm.

Edit: I prefer Motorola over Nokia.

If you like, you can try my non root smartphone guide which works with any Android phone from the last 5 years, and even upto phones as old as Android 7 Nougat. (NOTE: Please do not use phones that old for daily driver, they have security risks.)

https://lemmy.ml/post/128667

You can do 99% of the stuff fancy custom Android builds claim to provide without needing to root or unlock bootloader (this one prevents lots of risks alone), as far as privacy or security goes. Sure you may not be able to change your boot screen or use some fancy Xposed mod, but that is the cost of extra security. You can use Wavelet or RootlessJamesDSP without root instead of Viper4Android for sound improvements.

I do have a ranking of phone brands in there that is a bit old, but free of political biases, and still relevant. Your options for a LineageOS compatible phone might be low. Xiaomi and Motorola are good options. Avoid OnePlus if you want to use full 48/64 MP camera resolution, they lock it to their own app intentionally. https://www.celsoazevedo.com/files/android/google-camera/f/post-05/

Not sure what else I could tell, depends on whatever roadblocks you encounter upon research.

If you want a great cameraphone with bootloader unlocking, maybe buy a second hand Xiaomi 14 Ultra in few months?

Custom ROM support relies a lot on a phone either being unique in some nerdy kind of way or having widespread community interest (especially appeal to Indian consumers since many community developers are Indian). The Google Pixel and Fairphone lines consistently have great support due to the first reason, while cheaper Chinese brands often have decent support for the second reason. Nokia is in a bad position in both respects - its phones are neither interesting or particularly cheap/good value for money - so its support is generally pretty bad.

If you plan to just use a phone with the stock ROM then they are all equally bad when it comes to leakage to Google. However brands that try hard to force you into their heavily modified Android ecosystems like Samsung and Xiaomi are particularly bad for privacy since they have a ton of extra data collection built in that is either forced or suggested to you quite heavily (many features are locked behind additional privacy policies and account logins). You are better off going with something as light as possible in that case. Since you mentioned Motorola, I'll add that I have a razr 2023 and beyond a few optional apps that I can disable, it is pretty standard Android with no additional data collection or accounts required. Motorola phones can have dogshit software support, though. Like this one I have is less than a year old and it's already taking them 4 months to push an update.

I've asked a similar question not long ago and the consensus was pixel, even though I had already ruled them out in my question.

I still haven't changed phones but I'm leaning on a nothing 2a, since it's reasonably priced for the storage that I want.

However, I've been looking at phones based on the specs I want and check XDA forums and see how active they are, in the hopes I get a phone popular enough that has long term community support

Conair was always my favorite

I'm using a SHIFT6mq with LineageOS. It's similar to the Fairphone (expensive, but repairable, sustainable, good Custom ROM support), but it's got a few different design decisions and much higher build quality compared to the FP3 I had before.

Well Nokia is a no no They don't allow bootloader unlock, I would recommend that you check which privacy oriented custom ROM you want to install and check the supported phones they have listed and buy one of those models for installing the ROM