@bumblebreath what you are describing doesn't sound that much as being reasonable or realistic, more like reluctantly settling or trying to go against your gut feeling. And that rarely works out well.
The men who you liked more don't sound toxic or that there was toxic mess with your head chemistry, just maybe that they weren't interested enough, but then you do want someone who will really really like you for who you are without needing to be more than you are, so they just weren't your true match.
Things like voices or accents I think are very difficult to overcome, our libido is formed/very influenced before even the age of 7, and there are elements of looks/voices that aren't anything to do with being picky/unconscious racism etc, it's more what more brings up the feeling of safety and familiarity, or the opposite, feeling less safe, and I think it's next to impossible to override.
People definitely can grow on your but normally you can tell from the start if the potential is there.
Also I'd say from previous experience - I had a partially long distance relationship with ex husband who came across absolutely brilliant, sensitive and deep thinking on paper, and turned out to be borderline needing to be sectioned mental once we were living together, so I would always put what they come across like in writing secondary, way secondary to how they come across in real life.
You aren't going to be exchanging notes with him if you are with him. The most important thing that YOU feel good when around him.
I think being excited to see them will give you the motivation to develop the relationship and overcome potential problems which appear in every relationship sooner or later. If you are having to slightly force yourself or talk yourself into it, it's a bit doomed.
Though there is such a thing as finding fault with everyone because actually you are the one who is scared on a deep level of forming a strong attachment to someone, but if you've managed to have relationships in the meantime, even if not very significant, that doesn't sound like it's your case.