>>76268608 (OP)If only one: squats. The king of barbell movements, and the most functional.
If only two: squats and overhead press. The king and queen of barbell movements.
For the rest... Everyone likes a big bench press, but it's the least functional of the barbell movements. Dips and pull ups are accessories, but pull ups are more functional than deadlift (if you squat), bench, or dips. Deadlift is more functional than bench, and they're both more functional than dips.
The only correct order is: squats > overhead press > pull ups > deadlift > bench press > dips. Coincidentally, I do the first five, or some variation thereof, every week.