QB/RB Mechanics

It is possible to keep the same footwork for most of those plays if you run a double option (QB and 1 RB only) instead of a true triple in my opinion. My reason for saying this is with a triple you will have very different aiming points for the POA after the initial read. The Midline, Veer, Zone, and Iso can all be ran with close enough footwork that the defense may not be able to tell.

Some plays by nature will be slightly different. The inverted veer is completely different from the veer in that the path of the RB is north/south with the QB going more east/west while the inverted veer is the opposite, therefore you can't have the same footwork for those two plays.

IMO, don't worry about making every single play look the same, but focus more on being able to attack at two different places with the same footwork (see: inside zone / outside zone backfield actions).