If you use SwiftLint in your SwiftUI project, there is a rule, by @rerycole34, for making sure that your images have either an accessibility label or are hidden for assistive tech because they might be decorative.
Rule: https://realm.github.io/SwiftLint/accessibilitylabelforimage.html
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As with UIKit, in SwiftUI you can also add/remove a11y traits. But because of its declarative nature, you'll have to approach it in a slightly different way. A little nuance, but something that made me scratch my UIKit head when learning SwitUI.

Sometimes you can create your own accessibility elements from scratch to group elements too. Perhaps because they're not contained in the same superview. You can combine these elements' frames and provide a suitable accessibility label.
Check isReduceTransparencyEnabled to lower transparency. A great example is Spotlight. Not only transparency is removed but it keeps the main color of the background, it feels personalized and contextual but reduces noise and improves contrast.