Vintage Weinmann exist in 700 though they will be a bit hard to find as here in US everyone was still on 27. They are good rims but not that strong, always vulnerable to damage. Without a hook better to use them with steel-beaded tires or at least keep the pressure down.

1973 was right about when the Super Champion #58 rim began to be popular. Again they exist in 700 and will be hard to find. Ten years ago they were priced crazy, you can get them now for less than most better new rims. An extremely strong and tough rim, lasts at least as long as anything new. Has bead hooks. Wide enough to be comfortable with tires as wide as an original Schwinn LeTour or wider if you want. Only imaginable downside is they are a little heavier than most (not all) new rims.

Slightly later rims are labeled as 'Gentleman' and even later ones are Wolber Gentleman but all same rim as a #58 .

Closest current production rims with a vintage look would be Pacenti Brevet or H+Son TB14.

Unless you are seeking very rare rims, much scarcer than what's being discussed, use NOS rims on a rider. They are out there.