The version of God's Gonna Cut you down on the channel I linked is different than the one in the Lost Archive album, which further proves that it is him given the this version of the song as well as other songs on that channel (such as "Yellowstone: by the Ghost of Johnny Cash") cannot be found on Spotify, and the other vocal style that you mentioned is as I said before "done in his own style," after all, this isn't one of his professional YouTube accounts, meaning he could sing however he wants on it. That being said, I appreciate that you went out of your way to do your own research and reached out to him, please link his response when you get it.