Probably none. Kane Parsons was signed on with A24 as an individual who is visibly and obviously the focus figure of an internet phenomenon. SCP, being a collective work from the outset, has no such focus figure. All its most notable elements are either not owned by the site's current administrators or are under licenses that preclude the sort of exclusivity that Kane was able to attain. They won't even be able to protect "secure, contain, protect" as a property. A short phrase like that is too small for copyright and would normally be protected under trademark, but they have no such trademark registered.
It's possible a single figure will push himself forward as the "creator" of SCP, but anyone who does this is guaranteeing they'll be excluded from the "community", which will also tear itself apart over the "betrayal".