I will do my best to stay on topic, but allot of questions here.
The real answer to first post, The core that works best for you! I've seen boo excel and be inefficient, sometimes tillering boo is a bear and causing the 2 limbs not to function so identical. Elm is a winner because it rides the fence, good feel reasonable speed and looks good. Maple has many hard spots, stiffer feel and not the quickest response but holds up well.
Design does beat core material and different cores will respond different as per design.
In general, a laminated core is superior through fact they are evenly stressed as the properties of solid wood change every inch.
Feel and harmonics do change according to the core whereas the crono may not agree.
Glass IS NOT doing the work!!!!! If that were true at all then explain those incredible non laminated self bows that, some, keep up with the best of the best. Glass simply holds the cut-through-grain together as without it bending fractures the cut grain. Further more, solid glass limbs are lucky to shoot 25 yards.
For most people, you get a bow in your hand and love it or grab another, they don't have the opportunity to pick up 4 of the exact same bow model made in 4 cores of the same pull weight on the same day to see the difference, so focus on design and trust the bowyers recommendation when you tell him what you want out of your bow IE..smoother feel, a certain look, more speed, more reliable (some have habit of dropping the bow from 15') etc..
The above is based on over 35 years of extensive bow testing and bow building, hope it helps.