The Baritone vs tenor vs Lyric baritone is really just an exercise in semantics-Especially when we are talking Musical Theater. The opera world would probably classify him as a Baritone, as the real meat of his range is at or just above the staff.
As far as musical theater-Listen to His recording of The title song from Anyone Can Whistle or "Johanna" from Sweeney and you would say he is a tenor. But give a listen to "Where
Thine That Special Face" from Kiss me Kate or "If Ever I Would Leave you" from Camelot and you would say he is a baritone.
Regardless, he is fantastic.
Other than that, did you enjoy the play Mrs Lincoln?