you do know Jimbei won't follow someone like Sanji ? Sanji is too insecure for Jimbei.
Brook also follows a lot Zoro. Franky also for Zoro. Those 3 cares a lot about respect. Zoro is perfect for them to follow.
Chopper will go with Zoro whatever will happen.
Ussop trusts more on Zoro than Sanji.
Nami and Robin ? hhm to be honest with you only Robin will follow Sanji. after wci, Nami hasn't the same trust on Sanji anymore, she even said that she won't forgive him.
If Luffy dies one day, Zoro is the only one who will be capable to gather all of them, Nami won't leave and Sanji will follow her. If it's Sanji, be sure Zoro and Jimbei will leave. But probably sure Zoro will disband the SH if anything happens to Luffy.
You do get that Jinbe followed Sanjis leave end of WCI before he went to pick up Luffy. In fact Jinbe actively apologized to him about the ships state. Jinbe would follow Sanji. And he showed that again in Wano when he stated his goal was to take both Luffy and Sanji to the top understanding his position was below Sanji.
Nami still relies on Sanji more than she does Zoro. She calls Zoro a brute all the time and has shown no appreciation towards him. There’s a reason she argued with Zoro in Water 7 but not Luffy.
Usopp has had more connection with Sanji than Zoro. Water 7 highlighted that when the only person who stood up for him when Luffy was about to kick him out was Sanji who told him to apologize then he gave Usopp the will to fight and reminded him of what he could do. Usopp has never shown he trusts Zoro more than Sanji.
Brook has never followed Zoro after Zoro vs Ryuma. In fact Brook stated that both Zoro and Sanji brought him to tears at the end of Thriller Bark, and there’s a reason Brook has defended Sanjis kindness and personality twice in two arcs.
Sanji has a closer connection to most of the crew than Zoro does. And that’s done on purpose. Saying the crew trusts Zoro more than Sanji is as wrong as saying Luffy trusts Sanji more than Zoro. They serve separate roles.
Sanji rallies and protects the crew, Zoro stands by and cuts what’s in Luffys way.