For purposes of this discussion I'm assuming a wealthy business traveler (limo/uber/lyft to airport so no parking + all carry-on).
I also forgot customs/border control for international flights.
Of course, for personal/family, this adds probably an additional 30-60m + 30 for international.
I check luggage maybe one in twenty flights. And rarely drive myself to the airport. So your mileage will vary. That said, I hate cutting flights close so I always try to arrive st the airport 90-120 minutes before the flight even if I essentially never need to have done so.
And don’t forget deboarding which seems to take a least 20 minutes. And waiting for your luggage.