That is a nice chart, never seen it before, fits my experiences to a “t”.
Increasing crank length increases torque, but at a cost in terms of “ease of spin” and the akwardness that comes with having to manage a longer crank (pedal strike, sweet spot/power position, timing)
The only caveats I would add are rider experience/skills and tire size. I have found that both long and short cranks require more “work around” in terms of skill, so starting with cranks that are too long or too short could be a problem. In terms of tires, I was riding 165mm cranks on a 26 x 3 and did fine, but when I went to 26 x 3.8 I found my control and climbing was significantly reduced. I bumped up to a 170mm crank and my control and climbing returned to normal.
Starting muni 24" = 145-150mm, 26" = 150, 29" = 150-160, 36" = 150-165
All of my unis (26 x 3.8, 29 x 2.4, 36 x 2.5) are set up with 170’s, this is maybe not optimal for the 36, but I can’t find 175’s without q factor