Aside question: I searched long and hard for an ESP-12F without a 2.54mm carrier board (at least for the PCB) but I couldn't find it. So in the end I started with Matthijs Westerhof's part with carrier board and modified that.
How should I have found the parts you're mentioning? They're almost exactly what I needed (although my part has the carrier board in the BB view, similar to most SMD parts for adafruit and such).