Hm, do they need to be Steel toe? The Jim Green boots are not truly barefoot, as they still have a proper thick tread, they just don't have a heeldrop and are extra wide. Unless your workplace asks for like, a receipt for your boots where they would notice they're called barefoot, they wouldn't be perceived as barefoot from a casual inspection, they just look like a leather hiking/work boot.

The same could be said for the other brands I linked, none of them have like individual toes or anything, they look like normal sneakers, just wide.