I'd have to guess the smooth/creamy aesthetic must have went out of style for a while in post modern photography. If you were 100% in focus groupf64 style shooting, it doesn't matter, just like iris shape isn't important in the enlarger because ever piece of silver is in focus. Shutter choices are a big part of this. Old pre-war compound shutter have more blades than copal for example. Copal 3's have more blades than copal-1's but I'd guess that's a because it's a bigger opening, not just because they can.

In LF many of the barrel lenses (no shutter) have lots of nice curved blades. I like these and use them with the focal plane shutter of the speed graphic. Quite a few options for old lenses and aperture styles in LF.