I'm not aware of other filet brazed Schwinn lightweight offerings after these described below.
Aside from the limited run of 28" continental's which is a factory custom of sorts because electroforged components were not produced for the head tube for a frame of this size. But this couldn't be described as a filet brazed frame in the traditional sense.
This is wrong?
"Schwinn bicycle names such as "Super Sport" and "Superior" have been re-used for different models over the years, in part to hold on to copyrighted names by periodically re-using them. This may explain why the Sports Tourer was renamed the Superior in 1976. After Schwinn's fillet-brazed line came to an end in 1978...
...In 1979 Schwinn offered one last fillet-brazed
CrMo bicycle: The "Sport Limited."...