I hope those bikes with short stems have had a rear tyre pressure boost, due to more weight over the rear. 😉
Without messing about, finding something to use as an equal height platform for one wheel while I have bathroom scales under the other to judge weight balance, ive been guestimating at 40% weight over the front of my Wazoo since swapping the default 80mm for a 35mm.
But it wouldn’t surprise me if the front is only carrying ~30% of the weight.
Same goes for my relatively high front ended Cube Attain road bike, I’m guessing at 45% front wheel load when I’m on the very comfortably high drops, but it wouldn’t surprise me if this is too high as well.