I love when devs become very open about this stuff. A very delicate task to have for balance.
1 feels like the best fit for a self-insert character, looking fairly clean and simple.
I personally prefer 2 overall. It's main advantage over 3 for me is that 2 gives a vibe of being able to both top or bottom very well. 3 feels like a veteran adventurer who can command (and mostly top) that already knows his sense of purpose. He's very handsome and has natural appeal, which is fine as an archetype, but for the purposes of this devlog, I'd take 2.
2 feels like an adventurer done right, that can be honed in many ways. Can also open up for more convenient design changes, as 3 got more pronounced features already.
I love this devlog. No matter what you settle for, do know that we've been enjoying the work nicely! It can only get better from here~ thanks for the opportunity