The following NPC voices have little inflection in their speech, and instead sound like they're just reciting words:
Ada Lovelace
Granville Tailer Woods
Maria Sklodowska-Curie
-Nicholas Throckmorton is better with inflection, but still sounds somewhat mechanical.
Puck, as always, is great.
This might be a problem with other voiced NPCs throughout the pre-Nightingale game, but since the game is still EA it's not a big deal. That should be considered for re-do before release, though.