I tried closing the apps, removing all widgets, closing all open apps, rebooted my phone a few times, then kept it off for a while, turned off iPhone Mirroring and there is absolutely no difference.That's excessive. Do you have a lot of widgets? I would try force-closing the apps that are associated with each widget and rebooting the phone.
I never had Rise to wake or AOD on, I have notifications turned on only for like 3 messaging apps so my screen doesn't turn on too often. I can't think of anything else...