The "👨🏾‍👩🏾‍👶🏾‍👧🏾" or "Family - Man: Medium-Dark Skin Tone, Woman: Medium-Dark Skin Tone, Baby: Medium-Dark Skin Tone, Girl: Medium-Dark Skin Tone" emote represents a family consisting of a man, woman, baby, and girl, all with medium-dark skin tones.