The equivalent of using a .semanticGroup accessibilityContainerType in UIKit, would be to use the .accessibilityElement(children: ) modifier with the .contain option in SwiftUI.
Here's a refresher with some use-cases:
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Creating UIAccessibilityElements, combined with a semanticGroup accessibilityContainerType, can also help you make components as complex as charts accessible. Example from "Bring Accessibility to Charts" WWDC21: https://developer.apple.com/videos/play/wwdc2021/10122/
In SwiftUI there is a very useful modifier accessibilityElement(children:), that will do very different things depending on the AccessibilityChildBehavior passed as a parameter. There are three options: ignore (default), contain, and combine.
If an image does not convey additional information, maybe it's just used to make the UI look more attractive, it makes sense for VoiceOver to skip it. UIKit: set isAccessibilityElement to false. SwiftUI: create a decorative image explicitly.
