I used to fly on four variants at the same time PAX and CARGO. To have something to crosscheck loadsheets for plausibility because of the very different masses I had a sticker on my clipboard with:
DOM: Dry operating mass (based on a standard catering) of all variants
Wingspan:
Height:
Wheelbase:
Full turn radius:
(The span and other measurements are very helpful when doing a lot of charters.)
Up to today I've seen such very helpful stickers only in trucks.
Would greatly enhance awareness when DOM was e.g. found on the limitations placard instead of hidden in the performance section of the AFM or OM-B as we say over here.
I always crosscheck for plausibility using different figures from different sources:
DOM + FUEL + PAX (at 100 kg each including bag) = RAMP MASS
DOM (you should have that from your company or at least have an approximation)
FUEL (you should defintively know about that)
PAX (not what's on the loadsheet but what your purser tells you she/he has counted)
CARGO (the only source may be the loadsheet - but to some extent you even have to trust that)
Figure out your own requirements.