Road cleats give you a little more lateral adaptability than MTB, but in case you need more, Speedplay offers optional longer spindles. Your or your mechanic has to do the changeover, though.

Between Look and Shimano, the way to tell is by side-by-side comparison of the cleats. The one with the wider slot and narrower washer for the bolts should win.

Speedplay, on the third hand, offers optional long spindles for some models. You or your mechanic has to perform the conversion, however.