little house on the prairie
I think from the 80s also had that
I think that friends had an episode
30 rock
the munsters
south park
arrested development
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hope this helps :)
Thanks for everyone's help! I ended up using Fresh Prince of Bel-Air as my third one. Even though he isn't technically adopted, he lives with his aunt and uncle for like over 5 years so that pretty much makes him adopted.