If a view has isAccessibilityElement to true, assistive tech won't look for any of its subviews. That means that if there are any buttons inside, they won't be accessible. You can add custom actions to that element though.
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When making charts accessible, sometimes you may have just too many data points for the user to have to go one by one through all of them. In those cases, you can create accessibility elements that represent meaningful chunks of the graph.
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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.
