I have not seen a chart floating around on the Web anywhere.
I have been very fortunate to try a few P226 models. Some now have the E2 grips I see--I'd avoid that, but that is personal preference. Both Legion models are excellent. Other favorites would be the Stainless Elite, TacOps and the Dark Elite(looks like it is now called the Enhanced Elite, but now has the E2 grips, which can be swapped out of course). The Elite SAO is also great I am sure, but I have not personally sampled one.