That's almost all of the themes in the official theme repository. bold and fresh didn't have screenshots, but they do have local demos. Both have two-column layouts.
Part of the official themes repository.
Supplied tuxlite_zf screenshot:
Supplied relapse screenshot:
Supplied pelican-cait screenshot:
Supplied lannisport screenshot:
Supplied waterspill-en screenshot:
Supplied waterspill screenshot:
Supplied tuxlite_tbs screenshot:
Supplied notmyidea-cms-fr screenshot:
Supplied notmyidea-cms screenshot:
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