Early papers (e.g. https://inria.hal.science/inria-00555588) use C=Convergent for state-based CRDTs and C=Commutative for op-based CRDTs. Nowadays it is usually C=Conflict-free for all variants (e.g. https://en.wikipedia.org/wiki/CRDT).

You could add to the confusion by using C=Collaborative. (I personally prefer "collaborative data structures" for the more general concept of data structures that can be edited on multiple devices; CRDT is a mouthful and now also a buzzword.)