Uhm, yeah, they each have strong and unique profiles. and in the movie, you do see the autobots grouped together. in fact, after they land and take their earth forms, they spend a great deal of time grouped together. And they're very easy to tell apart.
starscream, blackout, they all have distinct shapes from one another. The one place the decepticon designs have an issue is that their color palette is very close to one another, but this has a lot to do with the fact that they all have military alt forms. The autobots are very clearly delineated by color. And no point would you mistake ratchet for bumblebee or any other autobot. or decepticon, for that matter.