I don’t know - the Cowboys game is the only Rams game I watched this year. From what I understand, the inside zone was new and against tendency, one of the reasons it caught the Cowboys off guard. Kind of like had the Cowboys come out in spread and just passed all game might have worked.
Running all plays from the same formation is absolutely their style though. The big “innovation” from McVay is that most nfl teams know that you have tendencies from formations (eg, you’re probably going to run from big 22 and pass from s11). So they run virtually all their offense from S11 or 11 with a bunch. The defense just has no way of knowing personal what you may do, and the offense knows pretty well what the defense is doing.