No. Nokia 7 Plus does not have the Optical Image Stabilization but it does have Electronic Image Stabilization.
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.
No. Nokia 7 Plus does not have the front camera flash. But the display of the phone works as a flashlight in low-light conditions.
Yes, Nokia 7 Plus does have the hybrid sim slot. You can use either 2 sim cards or 1 sim card & 1 memory card.
Great battery life, immersive display, solid design, and software at its purest, that's the Nokia 7 Plus for you.