I use one sheet of A4, with the left-hand-side describing our four drawer freezer, and the right-hand-side describing the three drawers of 'Haze's', (Mrs Growster's mum's freezer).
Like everyone here, they get catalogued about three times a year, there's always crossings out, and soon, I'll have to find room for Lily's meat and veg, but I can't at the moment as we have about thirty plastic bags of tomatoes in her drawer, (Haze's bottom drawer)!
As for labelling, that's now done on a slip of cardboard-cutout, about two inches by a half-inch, and stapled to the bag above the sealing strip, to avoid rust contamination, and it seems to work OK...
But of course, whenever I see a bargain, all that gets shifted around so the only two drawers with recognisable items are the beef and lamb one, in our freezer on the top two and the chicken and pork one underneath - or is it now on top..:0~