The confusion is between motorcycles and bicycles.So, confusion reins!!![]()
On a motorcycle: Right side of the bike is stop/go, left side is shifting.
Right lever: front brake. Right grip: throttle. Right foot: rear brake
Left lever: clutch. Left foot: gearshift
On a bicycle it's left front (front brake and front derailleur), right rear (brake and derailleur).
I also swapped brake levers when I was riding a motorcycle.