dunno if this is a question/mystery or General/others but since i'm basically asking a question I'll go with that.
Here's how I rank the crew.
1. Luffy - I love his goofy and direct perosnality, he has a great fighting style and abilities. awesome protagonist
2. Sanji - I think he's cool, I like his fighting style, his perverted antics are hilarious
3. Nami - Best girl since day 1, manipulative, cunning, her reactions to the crazy stuff the crew does.
4. Zoro - Badass, three swords is cool.
5. Robin - Her twisted personality when making jokes or comments is amazing, plus the whole enies lobby arc shot her up my list.
6. Jinbe - What's not to like about this guy, he's great. and we've waited so long to finally have him.
7. Vivi - the long lost princess of the crew, I miss her :( lol
8. Carrot - she's cute, she's funny, i love the garchu thing.
9. Brook - his performance in whole cake island raised him to the top of my bottom four, I like him more now than i did before
10. Usopp - He's ok but nothing special in my eyes.
11. Franky - I liked him a lot more before the time skip when he looked like ace venture, i just dont like teh shaved head or massive arms.
12. Chopper - excellent character pre time skip, redesigne dpost time skip to take full opportunity of his cute marketing ability. I miss Arm Point it was so much better for his main fighting form than this kung fu point, it sucks.
If we're only going by how much we like them, then -
1. Zoro - Loyal, cool, strong, and dedicated. He embodies the samurai spirit more than anyone else in the series. He possesses the strength and resolve to be a successful pirate on his own, but instead chooses to support Luffy through honor and newfound respect. His loyalty for those he cherishes is second to none. Whether it be Kuina or Luffy, he'll continue to fight on your behalf as well as his own.
2. Luffy - Goofy, strong, brave, determined. Luffy's the perfection of the goofy protagonist. He manages to drive the plot, while not being the only moving part. And despite his growth over the years, he still feels like the underdog in this epic. But what makes Luffy most is his free spirit and simplicity. He isn't deterred by details and other non-necessities. He's all about fulfilling his grand ambitions in the most fun way with his friends. However, as captain, he cherishes and trusts his crew and friends along the ride. A true leader.
3. Nami - Smart, snarky queen of One Piece is my second favorite female in the whole series. She's the main culprit to look at to prove that you don't need to be physically strong in order to be a valued asset. And Nami is arguably the most crucial member on the crew, as no one would be able to survive out on Sea without her. Wherever you go, Nami will always be that guiding hand.
4. Usopp - The straight man, the liar, the comedian, the god. He's the most human member on the crew, therefore usually the most relatable. What was is great about Usopp is that he's not just a big joke, as he gets moments that legitimize him as real person, with real strengths and weaknesses. He has one of the best character arcs of any Strawhat during Water 7, which had him overcome his deep-seated inferiority complex. He is lastly, a grand proof that bravery takes overcoming your fears.
5. Sanji - The chivalrous cook. If there's one thing that best describes Sanji, it's conviction. He's suffered a traumatic childhood under his tyrannical father and callous siblings. His natural kindness and humanity having no place with them, he was able to meet someone he can call his father, who taught him all of what he is. A gentleman driven by his love of cooking and respect for all women. There are countless times where he's forced to compromise, but he never loses sight of who he is.
6. Brook - Despite not having a heart (Yohohohoho), Brook has one of the biggest ones on the crew. His dream being one of the less selfish ones, and not as extravagant. He only wants to keep a promise to a friend. He has had to suffer beyond the point of any sane man, but his goals always remained towards that friend. His occupation as a musician is also guided by benevolent intentions, as he desires to play in order to fill joy and laughter for everyone around. His role might seem the least necessary of the crew, but just the fact he is there as a constant support system, even considering his own baggages, says all about his strength of character.
7. Jinbe - Jinbe's relatively new as a Strawhat, so a lot of my impressions of him are from when he was a Warlord. And as a Warlord, Jinbe stood out as the most noble of the bunch. Part of the marginalized Fishmen race, Jinbe served as an ambassador for them, both in and out of universe. A chance to see the best Fishmen could offer. He carries a whole race on his shoulders, due to continuing on the wishes and dreams of Otohime and his former Captain Fisher Tiger. His relationship with Luffy probably being one of the most profound on the crew, as he not only saved Luffy's life, but his spirit during his darkest hours.
8. Franky - Super. This guy can awaken the inner kid in you. A strong personality, Franky is dedicated to his craft as a shipwright. Building and constantly being proud of his inventions. Franky's will is also among the strongest on the crew. Being only one of two members who's spirit never broke. Tying into his masculine persona. If anyone besides Luffy is a shining beacon, look no further than Franky. However, he has a heart of gold, easily brought to tears over the barest of emotional moments.
9. Chopper - Despite his accusations as a monster, Chopper is nothing but a supportive presence. The act of kindness shown to him by Hiruluk instill a desire in him to help people. As a doctor. Going from a primitive deer to super genius hybrid, Chopper never hesitates to aid his friends in a pinch. Even willing to forego his cherished humanity for their sake. As the youngest member (for now at least), Chopper looks to the other members as inspiration and guidance through the adventure. He wishes to be as smart as Nami, as brave and strong as the monster trio, as seasoned as Brook and Robin. Also, he's really adorable.
10. Robin - Mysterious, mature, and tempered, Robin is a prime example of the positive transformation being a Strawhat is. All her life, she's been on the run, not being able to form bonds or feel at ease. She was consumed by the darkness that was her fate. A child labeled a "monster", "a devil". That changed once she met Luffy and the others, and one of the most dynamic character arcs occurs. The lonely child had found friends whom she could depend on always. She was now free to be herself and not the self who constantly had to run. The one who could finally live out her true passion for history with those she cares for.