The "👨🏽‍👩🏽‍👦🏽‍👧🏽" or "Family - Man: Medium Skin Tone, Woman: Medium Skin Tone, Boy: Medium Skin Tone, Girl: Medium Skin Tone" emote represents a family consisting of a man with medium skin tone, a woman with medium skin tone, a boy with medium skin tone, and a girl with medium skin tone.