They all can be seen in the TBL file. Lich is surely the simple way of Leech, the sequel of the Flail, and the predector(or how do you write 'previous version') of the Lamprey.
The Morning star is also the sequel of the Flail, so the Flail II could have remained.(See: Why didn't they rename the Stilleto II to anything else?)
See page 28 of the manual, total chaos!
See page 21, find something that has been changed since!