Okay so far I consider that Nekomamushi represents Sunny, as Sunny is a lion; Nekomamushi is a cat, which means 1 family of feline. Nekomamushi is also being depicted bigger than other cats.
Next, cat number 1, 8, 11, 12 don’t have whiskers. Therefore they might represent female crew. So far the female crew are Nami & Robin. Cat number 1 might be Nami, since she sometimes relaxing herself, not to mention that her position on top of Nekomamushi might as well be a hint that she’s usually bossing around the crew. Cat number 12 might be Robin, because of prominent bigger eye size, and the darker part shapes like hair; which in Robin’s case because of her black hair. Cat number 11 might be Yamato, because of its position is either falling / climbing. So far Yamato’s been busy protecting Momo, and falls & climbs back on Onigashima. Not to mention Cat number 11’s stripes, similar to how Yamato’s nio-daisuki is white-purple stripes.
and we can go to other cats. Cat number 2 is Zoro, because of its band on its belly. Cat number 3 is Franky, because of its glasses and it’s wearing pants. Cat number 4 is Brook; again because of its glasses & its gentleman styled-clothes. Cat number 5 is Chopper but in reverse, as we all know Chopper’s weird hiding posture. Cat number 6 is Sanji, as his 1 eye is closed and the other is not; similar like how Sanji’s hair covers one of his eyes. Cat 7 is Luffy, because it sleeps in front of Nekomamushi which represents Sunny, and Luffy’s spot is on Sunny’s head usually. Cat number 9 is Usopp, as he’s standing on higher ground looking at other spot in far away suggesting how Usopp’s role as a sharpshooter. Cat number 10 is Jinbe.
so the unknown cat is number 8 & 13 which are the future nakamas; 1 female & 1 male. Hope this won’t be considered too far-fetched, though.
