There is no one, and will probably never be anyone who contributed as much as Erdnase did to card technique.
Try and find gambling techniques prior to Erdnase that are as well described and as practical as his techniques.
A large majority of the techniques in his book are still used today, more than 100 years after its publication; Dai Vernon had very little to add in Revelations; no matter how hard people have tried, they have not been able to disprove his statements about the perfect shift; any card magician who does not study Erdnase is doing themselves a disservice.
Until someone releases a text can fulfill the same criteria, we can't call them Erdnase.
Probably closest at the moment, in all truth, would be Tamariz, but even then, compare the amount of sleights that Tamariz has contributed and the amount that Erdnase has contributed, and Erdnase is ahead by far.