Don't forget about looking into information on motorcycles. There is much to be learned from their as well. It doesn't relate EXACTLY to bicycle frame geometry, but it's relatable. Because speed multiplies the effect of differing geometries, you tend to see a larger range in motorcycle geometries based on intended use and desirable handling characteristics. The increase can help one to understand what going one way on the geometry scale does versus going the other way. With regards to bike fit, and how a rider is positioned on a bike, motorcycle weight distribution (with and without rider) can help one understand how this comes into play as well.