Board Thread:Wiki-Related Discussion/@comment-10663213-20200205224608/@comment-31722073-20200206131701

But Ginny was consistently credited first for 6/7 seasons, so by that logic she should be first, and Bobby was always credited last for 7/7 seasons, and Colin was credited between Josh and Jared for 5/7, so only David and Regina are in their usual crediting.

Oh and my opinions are I don't particularly care, but I'll just throw out the idea of going by most appearances (Regina, Henry, Rumple, Emma, Snow, David then Hook).