For the door between the house and the garage all that is necessary is to install a door that meets the fire separation requirements of the code.
Glass door between garage and house.
Is glass code in garage door between house and garage.
Of course this door can never lead to a bedroom.
View all house to garage doors.
We check the bug on the glass and it is usually safety glass but have yet to find one with glass that is fire rated.
There is nothing that says it has to be a fire rated door as frequently reported by home inspectors.
A remodeler doing a flip house changes out all the doors in the home to update the interior and replaces the old door to the garage with a hollow core interior door.
The door shown below is an example.
We have several windows in the garage and if we have glass on the door we would bring a bit of light into the windowless mudroom.
You would need to use a steel retaining frame as the plastic home depot style would melt out long before the wire glass fell apart and the glass would be to small to worry about maybe 5 x 18.
For many people the entryway between house and garage is the most used door in the home.