The Accessibility Inspector has a Notifications log that you can find in Window, in its top menu, and then Show Notifications. It shows accessibility-related notifications like layout changed, screen changed, or announcements...
I learned about this feature from the Accessibility Inspector in this article by @basthomas. A very recommended read to learn all about the Verifying VoiceOver with the Accessibility Inspector.
There is an Environment Overrides panel in the toolbar on top of Xcode's Debug Area. It allows you to select some of the most common accessibility options and Dynamic Type sizes, like in the Accessibility Inspector, plus select dark/light mode.
Since iOS 14, you can get a human readable localised name for a UIColor, with a very useful property called accessibilityName, that you can use in accessibility attributes like labels or values. How cool is that? https://developer.apple.com/documentation/uikit/uicolor/accessibilityname
Images can automatically scale for accessibility content size categories, by setting the adjustsImageSizeForAccessibilityContentSizeCategory property to true, for any UIImageView you'd like to get its size adjusted. https://developer.apple.com/documentation/uikit/uiaccessibilitycontentsizecategoryimageadjusting/adjustsimagesizeforaccessibilitycontentsizecategory
Content © Daniel Devesa Derksen-Staats — Accessibility up to 11!
