It’s Snack. I think that’s the only thing we’ve ever seen him say. He’s got the grudge against the Worst Gen because Urouge beat him and Kid wounded him. The other three haven’t said anything to imply they were ever bothered by the Worst Gen prior to Luffy.
Not Snack.
Snack : Apoo & Urouge
Cracker: Urouge & Luffy
Smoothie: Kidd
Katakuri: Luffy
If Snack fought Kidd, he'd lose and be demoted before fighting Apoo even.
Snack defeated Apoo most likely (since he couldn't enter Tottoland) but loses to Urouge
Urouge can't handle Cracker ( even if healthy since Cracker counters brute fighters + has better skills)
Luffy & Cracker fought for long, g4 was even stalemated but then luffy gets help and win
Luffy couldn't hanke Kata until he got fs and used another g4.
This to show power hierarchy: FS luffy > Kidd ~ Luffy > Urouge > Apoo
Smoothie is the one who fought Kidd by the fact
She covers one eye, probably injured and also the fact she is like Linlin by growing bigger and stronger
If not then Cracker