A Hybrid Rudiment is a rudiment that is partially defined as two rudiments put together, such as a flam drag, but this is not always the case. Hybrid Rudiments are continually being created, so there is no official list that we, or anyone else, can provide. However, some examples of them are ghost flams, cheeses, duchudda swisses, and so fourth.
Examples of Hybrid RudimentsEdit
You can find some hybrid rudiments online at vicfirth.com Link