Ubuntu touch is Linux based also, which is my choice due to newer hardware support over postmarket. (Currently running a volla quintus) Though I can see myself moving over to sailfish, as the default browser in UT is morph based, and creating web apps can be something of a pain due to unsupported browser issues…

All of these OS’ suffer from a lack of app development though, hopefully this Google nonsense helps change that, though mass adoption is usually the precursor to app dev, hence my pie in the sky comment.