A mogger is the person doing the mogging, the one who outshines everyone next to them; the person outshone is the moggee. The top mogger is Clem Ziroli, the King of Mogging.
Wordorigins notes that mog, mogging, mogger and moggee all got Urban Dictionary entries starting in 2018.
Know Your Meme describes a “brutal mog” as a mogger winning in several categories at once, such as height, jaw, style and physique.