More steel option: Salsa Casseroll, Rawland Nordavinden, Honey Winterando, Rivendell Roadeo, Cielo Sportif
And the mythic Cervelo R3 "mud", if you can ever find one.
Trek Domane RSL and Colnago EPS are possible candidates, as per this thread:
https://forums.thepaceline.net/showthread.php?t=201843
Giant OCR circa '06-'08
Trek Pilot
Still curious about other options that are lighter weight than steel, if you think of any.