Falcon, Shryke, and Pharaoh are pretty similar and probably share the same bottom rim mold piece at least. First run Sirius Falcons seemed like a different mold top piece was used (Scorpius top/Shyke bottom supposedly) vs. 1.2 and the latest 1.3 Philo signature ones (which look more like Shrykes/Pharaohs). Flat ones are touchy understable (Champ/Pro blends seem flatter normally). Star blends seem to mold with better dome and fly most like the flight numbers (13/6/-2/2) when they have more dome. Really depends on the run for all of the 3.
Emperor (Shryke top/Destroyer bottom?), Destroyer, and Scorpius (early Destroyer top?) are comparable. There are OS runs and S runs. Generally a half step down in speed and a couple steps up in overstability over the Shryke/Falcon/Pharaoh.