No, they all vary slightly... But it makes very little difference to your tune.
If you tune on the leaner fuel (United) it will run fine on any e85. (Caltex, Powerplus, Drum e85.)
I have been running various e85 fuels over the last 4-5 years with 20 or more tunes, some very lean, some rich. I had quite a few issues during that time that should have blown my engine, like wastegate lines popping off (running over 50psi) and fuel reg/map sensor hoses leaking vac, leaning the tune out to 20:1 on cruise. It still ran fine, no melted pistons or det.
It really is the ultimate fuel for turbo cars, no matter what pump it comes from.