To find hand position ride bike. Ride bike a lot. Ride bikes plural a lot.

Adjust as required. If you made an adjustment before the ride take those tools with you on the ride. Never be afraid to move stuff around.

Thought I knew some stuff. Got one of those 40s/50s bars that droop from center and it was weird. Took a lot of getting used to. Were it not attached to a mostly original bike that was so very cool would have ditched those bars pronto. Glad I kept them, great bars.

Another bike came with those Philippe Professionel bars with the super long ramps the rando boys all rave about. That looked weird too. What stem length do you use with that anyway? The only loose French stem in house pressed into service. Two or three centimeters less than normal. That works great too. If I were to switch great bars between two great bikes pretty sure it would not work at all.

No fixed answer to your original question. Ride bikes. Change stuff around. Riding bike should always be fun. The machine should never be in way of fun. Enjoy your ride.