Yes, Nokia 7 Plus does have the Corning Gorilla Glass 3 protection.
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.
Nokia 7 Plus has an ambient light sensor, proximity sensor, accelerometer, e-compass, gyroscope, fingerprint sensor and hall sensor.
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.