Im now at a bodyfat of around 20-25%
1 year ago i had 15-18% bf and my zygomatich arch looked way more wide and prominent
Nowadays the sides of my face are totally flat
But it should be actually vice versa because on a higher bf your cheekbones look are fatter
Ive lost a couple of tooths since then and im Pretty sure that my zygos atrophied
Here are some pics https://imgur.com/a/qzmb4Rq
the first 2 pics are a couple of months old while the last pic is over 1 year old
Not a good comparison IMO
Cheek fat will destroy most of your definition. The only way to know is to lower your bf again and compare.