It's not just super bespoke that SwiftUI can't do well, there's lots of little things that are standard in UIKit and AppKit) widgets that inexplicably never made their way over to their SwiftUI counterparts. It's not unusual to have to drop down to the UIKit version for some little thing that Apple couldn't be arsed to port over.

This is incredibly frustrating, particularly now that more UIKit and SwiftUI widgets share underlying implementations.

Where "bespoke" is anything beyond master/detail and endless lists upon lists apparently.