There's no "standard amount of movement or force used on friction shifters. It all depends on how quickly your derailleur can shift. A Nouvo Record Rear derailleur, for example will need quite a bit more movement of the lever with a good amount of overshift and back trim to make it go from one rear cog, to another. The Suntour Cyclone Mk II RD on the other hand, would shift with much less lever movement and barely any overshift needed. All because os the difference in the design of the derailleur. And it all changes at the shift levers for almost all the different derailleurs. So friction shifting is a truly pure "analog" process. Even with clicking "power shifters (But not indexed.) Shifting would still be different per each different derailleur.
Now, with Simplex or similar, "Retrofriction" shifters, it would be different. Retrofriction shifters have an internal clutch (But no indexing or ratcheting.) that makes shifting feel much lighter and thus feel more precise. Amount of lever movement would still be different between different derailleurs.