Fell the most, technically mean that the gap between high and low is so large.
To answer OP, the answer would be Sanji.
- For Luffy and Zoro, Oda still wank them in post-TS as much as pre-TS.
- For Sanji, Oda went from
A. Sanji having bazillion roles such as cooking, curing, advising, fighting, spying, saving
B. SH would die without him in every arc
to
A. Only cook, fight, saving
B. SH can survive themselves
To answer OP, the answer would be Sanji.
- For Luffy and Zoro, Oda still wank them in post-TS as much as pre-TS.
- For Sanji, Oda went from
A. Sanji having bazillion roles such as cooking, curing, advising, fighting, spying, saving
B. SH would die without him in every arc
to
A. Only cook, fight, saving
B. SH can survive themselves