Conjecture, which isn't what you want -- but unless you see magazines for sale on sites that are specified to fit the P226 Enhanced Elite with E2 Grips, I suspect that they're all interchangeable.
(Until recently I had a P226 X-Five and it could use standard 226 mags; I even used the Mec-Gar equivalent of the factory hi-cap mags (they look like the factory X-Five mags), and they worked fine after a little sanding around the top of the big, thick bases plates. The X-Fives have a slightly different grip/mag well...)
I'm sure somebody here will have a "for sure" answer for you.