Brands to search for:

Nitto B123 and B125 cro-mo or Aluminum, Cinelli, Ambrosio (Italy), Major Taylor, Velo-Orange, Lino (Japan).

Soma does good bars but I don’t like their logo so, as for now, I would never buy it.

Before you buy:

Double check the stem you got: the clamp size has to be exactly the same of your handlebars otherwise won’t fit.

You can’t install a Nitto 25.4 in a Cinelli stem 26.4 because shims don’t do a reliable job.

The alternative:

A nice alternative are wooden bars. Not ISO certified but a nice and classy solution.