What formations are to be expected to develop between the transform boundaries of oceanic and continental plates?
The San Andreas Fault system is an excellent example of what can happen in an oceanic–continental transform fault.

It's also important to remember that plate boundaries are usually never 100% transform-like and are at an angle. This would cause either compression or extension, depending on the local geometry. A pull apart basin is an example of something like this. For instance, the dead sea is a basin on a transform fault between Israel and Jordan, and a few hundreds kilometres to the north, on the same transform, you have mountains between Lebanon and Syria.