Yes, Nokia 7 Plus does have the 4K recording support.
No. Nokia 7 Plus does not have the notification light. But it does have the ambient display, so you will always get alert on the display.
Yes, Nokia 7 Plus does have the fingerprint scanner.
No. Nokia 7 Plus does not have the Optical Image Stabilization but it does have Electronic Image Stabilization.
Great battery life, immersive display, solid design, and software at its purest, that's the Nokia 7 Plus for you.