Prius V (Audio/Electronics) :: Voice Command List?

I recently bought a Prius 3 and am very happy with its mechanical performance and fuel efficiency, but the driver interface sucks for the electronics. I'm used to my 2008 Mercedes S550, which may be an unfair comparison, but I really hate having to take my eyes off the road and reach across the dash to use a touch screen. I do like filling the tank for $25 rather than $70, though

I have tried a few voice commands with mixed results. Sometimes I get the requested result, sometimes I get a random (or no) response, and sometimes I strangely get a message to the effect that this function is not available while driving, even though I can get it via touch-screen while driving.

I found on the Mercedes there are a few commands I use often, and a huge number that I have no interest in. They are easy to find from either a tree structure in the manual or an alphabetized list grouped by the subsystem.

From searching the manual and the various Prius forums it appears that there is no readily-available comprehensive list of commands. The manual seems to give only examples and implies that you can step through the on-screen menu trees by voice, giving occasional examples. But I've had very little success with that. I also don't like having to take my eyes off the road to read the list at each level or having the car speak the list, which is way too slow. Both take too much concentration away from driving. With the Mercedes I can usually activate a command directly even if it is several levels down in a tree (e.g. "navigate to <a stored destination>") while an audio screen is displayed.

I have found a few lists online, but they don't agree with each other and seem to be from 5-10-year-old models. In general, they seem to list far more commands than I see on my screens.