6. Jang Ki Yong in My Mister as the loan shark. He's gone on to become a big star, but I thought his role in My Mister was his best acting. The other loan shark was also really good.
7. I didn't care too much for Squid Game, but the second young woman who sacrifices herself for the FL. got my attention, with her deadpan kind of dreamy portrayal.
Bonus: I have to mention one more. In Unfamiliar Family, the mother of a male attorney the FL starts working with late in the drama. We only hear her over the phone, but she is hysterical! One of those happy funny people you would love to know in real life.