Let's see, my trial and error saddle height is between 71.4cm on my touring bike and 71.8cm on my road bikes.
The Rivendell method gives me ~ 72.3cm
Lemond gives me 72.9
I tend to position my cleats a bit rear of the ball of my foot, so these calcs seem to make sense as a starting point.

OTOH, Loose Chain's method gives me 90cm

I suspect he should be dividing PBH by 109% instead of multiplying. That gives a result of 75.7 which seems more reasonable. But then again, I'm not professing to be the engineer, scientist or math lover that he is.