OK, so after saying “everyone just recommends the bike they are riding”, I’ll say that I ride an Aspero and I choose it 1) for the low BB and 2) because I wanted a “road bike for gravel”.
The bike handles and fits very much like a road bike…but very stable on the gravel. It could fit your needs. I would avoid the Aspero 5, however due to the integrated cockpit (don’t think it is needed for gravel).
The Giant Defy is another bike I would consider…a great all-rounder, IMO. It was on my consideration list last year, but could not find one.