Systemwide UI Tweaks
Apple, for some reason, appears to have shrunk the text systemwide in iOS 13 — though the exact size of the text appears to vary by device. The size of UI elements in the Settings app also appears to have changed, with some spacing and icon adjustments.
Although it’s worth that this could be a bug, based on user reports of UI inconsistency and the fact that these changes show up more prominently for some devices. One Redditor theorized that this could be the result of a dynamic spacing feature that changes UI based on screen size. That would make sense but it appears that it hasn’t been fully implemented yet.