Since we are losing 3D Touch API's with iOS 13, such as UIViewControllerPreviewing, UIContextMenuInteraction seems to be the replacement.
UIContextMenuInteraction is good if you want to put up a menu upon Haptic Touch. What if you want to do something else at the recognition of Haptic Touch?
Is there such a thing? Or is Haptic Touch is same as UILongPressGesture?
Reading the documentation UIContextMenuInteraction inherits from UIInteraction. Searching for all subclasses:
Reviewing each subclass I think that the one that best suits to replace UIViewControllerPreviewing is UILargeContentViewerInteraction because UILargeContentViewerInteractionDelegate has a method to return a view controller.