For 30 mm + tires and fenders and commuting I would say find a 70s or 80s sports touring bike that came stock with 27 x 1 1/4-in tires. For that matter, if it still has those wheels and they're in good shape, throw some 27 x 1 1/4 Paselas on there and consult one of the Frank Berto tire pressure apps with your weight, etc., and go - it's still a valid tire size, and new tires is cheaper than whole new wheelset and tires.

If you really want cantilevers, there were a host of 80s Japanese tourers that would fit your bill - Nishiki, Miyata, Univega, etc.