

Generally, GrapheneOS ia pretty much the best privacy-focused android version you can have, as it will strip away anything that’s related to google while focusing on a small amount of supported devices to ensure that not many vulnerabilities are possible on the devices.
LimeageOS are less focused on privacy and more about availability. /e/OS is pretty much a downstream of LineageOS focused on Fairphones. Generally a good choice if you want android without google services.
Honestly, Sailfish is only worth it if you have a license, as there are very few native apps and the android compatibility layer is the only way to have a proper daily driver phone. I did try it with the Sony Xperia X II a 1-2 years ago, and honestly, it was still very buggy.