I thought Bishop Sanborn of the RCI holds to the Thesis which is sedeprivationaism, yet I recall seeing a video of his voicing out against going to "una cuм" Masses, unlike the position of Bishop Pivarunas of the CMRI.
Bishop Sanborn's spin on sedeprivationism makes it largely indistinguishable from dogmatic sedevacantism. But with straight sedeprivationism, I could see someone entering the name of the Pope in the Canon, since the man would in fact be materially the pope.