There is also e/OS (whoever named e/OS needs a slap, it's a terrible name to search/google for answers, seriously, why? Let's pick a vowel and a very common abbr and join them with a symbol used in URL and file system paths, and expect search engines to even know what you're harping on about. Come on!)

LineageOS, while it has excellent broad support for devices, can be run without Google services for privacy, and is an awesome project that has been around for decades, it is not specifically built with security as the top priority.