These panels are definitely some of Luffy's best, but more recently:
Refusing to help Wano until their figurehead personally requested it from peer to peer
Ignoring the poisonous effects of that gas in Udon to prove a point to downplay their opponents + slave speech
Destroying the Mirror world exit onto the sunny + putting on a brave face for the crew
Encouraging Momo to bite Kaido to present him as less imposing
Other things I didn't like as much--but were consistent--was punching the guy during the start of the raid for wasting that food; giving away their positions
Also fighting Kaido in Act 1 rather than simply going to check on the crew
I'd say any list with Luffy in the top 5 has to be bias and subjective due to the sheer number of manga, but Luffy is a far better character than most credit him for. He's certainly and idealized, larger than life, romanticized hero figure and fits his story very well... And I think him dying at the end of the story or traveling to space are the only good ways to end his character's story. Top 5 is a reach tho