Rocker arm recommendations?

B3,
[1] No argument from me that rocker ratio & design is a dog's breakfast.
[2] Vizard's testing had nothing to do with the fact that the engine he used had canted valves. What his test wanted to show, & it did, was how the variation in different brands of rocker designs changed the ratio events. Things such as if the pushrod cup was higher or lower, how much if any did it affect overall ratio. Another example is the Crane 'fast lift' rockers; they achieved their early high lift by lowering the p'rod seat on the rocker.
[3] The rocker ratio comprises two components, the p'rod side & the valve side. If you are saying the ratio on the valve side of a roller tip rocker remains constant, then this is simply incorrect & Smokey explained it very well.
[4] In your above post you say a shoe type rocker has a different ratio on the valve side compared to a roller rocker. If the shoe on the shoe rocker has the same radius as the roller on a roller tip radius, then their ratios [ on the valve side ] would be the same.