I don’t know how true this is, but one of the actors who played one of the Knights of Ren said they saw an ending where Rey dies and Ben takes on the Skywalker name. Could be false, but if true, there may be a very unlikely chance this ending makes the deleted scenes release.
It was confirmed false. That guy didn’t even play a Knight of Ren, he was making it up.
Why would Knights of Ren have even been there, anyway?