I think some of the seventies Japanese lightweights are very nice. This is an example and it will be nice to see(hopefully) pics of it all cleaned up. My first lightweight bike was a Kabuki Diamond Formula , not as nice as this bike, but it was very light for a 25” frame and a joy to ride. I still have it . After years on a Schwinn Varsity , it felt incredibly quick and easily handled long rides without wearing me out.