Dr. Jo-Ann Brant is the author of a wonderful commentary on the Gospel of John: https://www.amazon.com/John-Paideia-Commentaries-New-Testament/dp/080103454X  

She has also written a book "Dialogue and Drama" about connections between Greek Drama and the style of the Gospel of John: https://www.amazon.com/gp/product/1565639073/ref=dbs_a_def_rwt_bibl_vppi_i1  

I heard about her from her appearance on Dale Tuggy's trinities podcast: https://www.youtube.com/watch?v=iVnOdseOXOY https://www.youtube.com/watch?v=ivbzGFC6DV0  

We talk about the Gospel of John, what makes it unique and just what exactly is it trying to teach us about Jesus.