The 👨👩👧👦 family: man, woman, girl, boy emoji shows a family including couple and boy and girl. On supported platforms it is seen as single emoji.
Note: In 2015 Family: Man, Woman, Girl, Boy emoji was add up to Emoji 2.0.
👨👩👧👦 Family with Mother, Father, Son, and Daugther
:man-woman-girl-boy: (Slack)emoji copy and pastefamilyfamily woman boy emoji