Yamato is a wild card to me, she's simply
too strong for the
"mid trio" or anything in between, and considering her young age and the potential to grow further, she's definitely on
"monster trio" tier for sure–and she's not going to lag behind Zoro and Sanji in the future either. There's a clear distinction between Jinbe and Yamato: Yamato is young [28 years old], she has adCoC, and she has one of the most powerful DFs in the series. She has so much raw potential for future arcs that I'd even argue that Luffy doesn't have; I mean, obviously Luffy is the MC and he's stronger than Yamato and he has future power ups as well etc.
But Luffy is reaching to his peak, unlike Yamato. Disclaimer for Luffy fans: yes, Luffy is always going to be stronger than Yamato, obviously lol. He's the MC after all, ok!!
Yamato has one the
top 4 defensive DF abilities in the series, only behind Kaido, Jozu, Cracker and Bartolomeo–and she has yet to awaken it. She also has advanced haki potential as well: she has yet to learn advanced CoA and advanced CoO either. Unlike Jinbe who is in his
"mid to late" 40s [he's 46 years old] and doesn't really have much potential for growth, especially considering the fact that he doesn't have CoC, Yamato has ton shit of potential to grow. If she joins the crew, then she's definitely going to be on par with Zoro, Luffy, Sanji; at least on the same tier for sure.