havent seen Go Go Squid but here are my personal floof faves ;) (all kdramas):
Shopping King Louis (very fluffy!!!!! so cute!)
100 Days My Prince (this is basically a historical version of Shopping king louis)
Weightlifting Fairy Kim Bok Joo (the start is a bit weak, but it gets much much better after episode 5)
Suspicious Partner (sort of fluffy, also crime/law)
(in 3 of these dramas plays the main lead actress Nam Ji Hyun - she is usually typecasted as cute, silly, innocent, but still capable female lead. she has a bit odd voice and many people dislike it but i personally find her absolutely adorable lol)