Yes, it's definitely nice to have swipe on Stock iOS Keyboard. I had to use a third party apps like Swiftkey. But after iOS 13, I'll be deleting that app.
Actually, Dark Mode is quite nice for those who own X/XS/XS Max, as it doesn't use much battery power due to the fact that with OLED, when the background is black, the pixel stays shut off (I know that this isn't possible on XR). Thus a true black background
I'll reserve final judgment on the Swype feature until I see it. I will say, it'll have to do more than just Swype, to replace SwiftKey.