I'm looking forward to someday trying a Librem 5 but it's been 4 years since I backed the campaign and now I've been told that it will be at least October before mine ships. If anyone else is interested in the state of the art of Linux phones it looks like PinePhone is your only choice right now.
For comparison Bunnie's Precursor [i] (FPGA RISC-V mobile) is slated for ~2yrs of development, and he's someone who has the connections and know-how to trim the delivery schedule as much as possible.
If based in Europe I think the best option is Fairphone. I'm not sure whether its fully open hardware but at least to a large degree it is. In addition ethical sourcing of materials, easy no-tool replacement of most parts, and you can install Ubuntu, Sailfish, etc.
It's not - it's pretty much a regular unlocked Android phone in this regard, which is why it was stuck on old Android version for a while. Other OSes work there by using Android compatibility layers. It is a very interesting and noteworthy project because of other reasons that you already mentioned, but FLOSS-friendliness of its components isn't one of them (which isn't surprising, as this requirement limits your available choices quite a lot; and so do the Fairphone's other requirements already).
