Since Isaiah the Prophet, explained in great detail the very Throne Room of God, and he insists there is only "one" Throne, maybe Jesus is literally standing on the right hand of God.
When we read John 1:1 and see the "WORD," and we know in Genesis the WORD was described as the Spirit (who created), and later in the Book of John chapter 1 this WORD becomes flesh, maybe the WORD in heaven is back to Spirit form. Thus, He is literally standing on the Father's right hand who is seated in the ONE THRONE.