Can you file fit any/all rings?

When you replace pistons and do you or should you file fit the rings. Or are there only certain rings that are file fit. Looking at premium sealed power rings for cast pistons 1st ring grey iron with moly, 2nd ring grey iron.

When I rebuilt a motor years a ago the machine shop honed each cylinder for the exact piston it would be home to since I’m assuming there could be some variation in width of pistons (few thousands). So if the bores are slightly different for the pistons wouldn’t the same be true of rings and therefore you would need to file them?