John Lynch and Terry Crowley 2001: 96 inspection of the unpublished wordlists puts it with Port Vato and Daakaka
The moribund or extinct language Orkon is lexicostatistically more different
from Port Vato [ptv] and Dakaka [bpa] than they are from each other
( John Lynch and Terry Crowley 2001: 96 ). It is missing from E16/E17/E18. See also:
Dakaka [bpa], Daakie [ptv].