First off, I’m listening to Mary Kate Wiles audio production of Anne of the Island right now & it has me completely smitten with the name Jonas (so many good names in that book by the way)! Out of your combos, I love Bartholomew Jonas!! I would probably leave off Jack because of the repeat initial, but that’s a personal preference. Finley Jonas & Augustine Jonas are my second favorites 
Adler feels a little youthful to me so maybe that’s why I don’t love him. Jack Adler does sound pretty cool though.
Zebedee Jonas
Obadiah Jonas
Jonas Finch
Jonas Hawthorne
Jonas Blythe
Barnabas Adler
Adler Ozias
Adler Shiloh
Adler Elm