Thread:Nausiated/@comment-3406131-20161122175750/@comment-3406131-20161126190534

Doctor Strange and the Sorcerers Supremes #2 state that Newton was evaded from his cell. So he was Sorcerer Supreme when prisoner, possibly after the missing issues of SHIELD Vol 2.

Other source to check: The Shield (Battleworld)'s Hel-Rangers and the Foundation (Earth-15513) of Battleworld, who respectively includes da Vinci in the Rangers, Nostradamus and Tesla in the Foundation. I doubt there is anything, but I say "maybe a clue, an hint".