This is an interesting video on how to buy quality exterior and interior doors. I found the info about all the extra features that are available for improving a standard door and frame (at minute 23:30) and the part about the Door Stud at minute 11:30 particularly interesting.
https://www.youtube.com/watch?v=KbPJb17ETfo&t=18s

Door Accessories
https://www.enduraproducts.com/
https://www.enduraproducts.com/resources/brochures/#1516655343809-02d0495d-5f52

Emtek Door Hardware
https://www.emtek.com/
https://www.emtek.com/support/brochures/

The Door Stud – Door Hanging Tool
https://thedoorstud.com/