I'm genuinely interested in the differences between road, cx and touring frames (and what real world differences they make) if anyone has links.
Road would be quick handling but stable, (73 paralel and chainstays as short as possible, BB failry low)
CX longer chainstays to give some stability and room for mud, angles slacker by 1-2deg. Ammerican CX bikes have much lower BB's than euro ones, as they do a lot more raceing in the dry on dirt tracks, whereas wuro ones are designed to give plenty of clearance over obstacles/mud. They often have long seatubes and heatubes as being aero is less important, but big frames are easier to shoulder. The yanks even have a niche within a niche, Gravel Bikes, road geometry, CX toughness, no mud clearence, designed for raceing on fire roads.
Touring bikes have long chainstays to give clearance between your heels and panniers. They're also slacker/more offset for the reasons given below about toe overlap.
Head angle and fork rake are also important for avoiding toe overlap with the front wheel, the biger the tyres/mudguards you want to run the slacker/more offset you need. Generaly bikes are built to minimise the wheelbase so road bikes are steeper, then CX, then tourers are slacker in that order to fit small tyres, big tyres then big tyres with guards.
Obviously within all that you've got frame materials, how tough you want it to be, etc etc as well. A tourer would be much more comfortable than a CX bike for example.