As the story progresses, it becomes increasingly obvious what each character's morals and personality quirks are. This makes it simple to identify each character's Myers-Briggs® personality type. Each of the 16 types in the MBTI® may be classified as either extraverted or introverted, intuitive or sensing, thinking or feeling, or, eventually, judging or perceiving. These many characteristics combine to provide the ideal example of a personality, which can then be readily applied to other characters in Bleach.
Nel Tu - ENFP
She's shown to inspire Orihime to trust Ichigo, she has a side to her that's pensive, and a side that's all bubbles. ENFP for sure.
Toshiro Hitsugaya - INTJ
For being so young (looking), Captain Hitsugaya is surprisingly stoic and serious. He is young by Shinigami standards, which is why he always feels the need to be taken more seriously. He didn't just get his title as captain by luck. Hitsugaya is the perfect INTJ. He is extremely logical and strategic and makes plans for everything. He is considered an expert strategist and tactician by his peers and a child prodigy since Gin Ichimaru.
Yoruichi Shihoin - ENFP - 2w3
Yoruichi makes for the perfect ENFP, she is pretty enthusiastic and oftentimes willing to lend a helping hand to Ichigo and his friends whenever they need it. She works with Urahara in his shop after cutting ties with the soul society. Like the ENFP she is, Yoruichi is an incredibly free spirit. She follows her heart more often than her orders, which was why she went rogue from the Soul Society and her long list of titles. Yoruichi is creative and social and excels at helping others reach their goals.
Kisuke Urahara - INTP
Urahara has an extremely lazy and laid back demeanor to all but those closest to him. When he first appears in the series, fans and characters just assume he is nothing really but a drunk, silly shop owner who knows of the Soul Society and is willing to help Ichigo on his quest to save Rukia. However, there is much more to him.
Chad (Yasutora Sado) - ISFJ - 6w5
He is naturally a pacifist, but it isn't so much do to thinking as much as it is due to emotions. He has always seemed to be emotional in the series. Ichigo could probably be extroverted, but that is a difficult one to decide on.
Renji Abarai - ESTP - 7w8
Renji is smart, energetic, and extremely devoted to his friends throughout the series. He loves to live life on the edge and is pretty perceptive of those around him. These traits make him the perfect ESTP. A lot of fans have realized that Renji kind of acts like a spunkier mirror to Ichigo. They are both headstrong and incredibly loyal to their loved ones. This is why Renji makes for the extroverted version of Ichigo.
Orihime Inoue - ESFJ - 9w1
Orihime is as supportive as they come, both mentally and physically. She supports her friends by creating shields and healing them when they get injured. She is also a constant moral support for her friends, cheering them on whenever they are dealing with any kind of struggle. She is social and popular amongst her classmates and is always eager to help those in need. These traits make Orihime the perfect ESFJ.
Uryu Ishida - INTJ - 5w6
He is so serious, but not quite an INTP, because he is a little to serious to be an INTP. he is incredibly logical with his decisions. However, this doesn't stop Uryu from being there for his friends whenever they are in need. He is an incredibly reliable character and uses his Quincy abilities to aid in battle.
Rukia Kuchiki - INFP - 9w1
Rukia is the second main character behind Ichigo and is the reason he got his soul reaper powers in the first place. Rukia makes for a great INFP. INFPs are constantly willing to support and help their friends, even if it may take them a while to warm up to people fully. Rukia warms up to Ichigo and ends up trusting him more than she trusts anyone else. Like the INFP she is, she is constantly willing to support Ichigo through his endeavors and feels just as uplifted as he does when he succeeds. Rukia may come off as reserved and calm upon first meeting, but this is natural for an INFP as they have an inner flame and passion that makes them totally unique.
Ichigo Kurosaki - ISTP - 4w5
He is probably one of the few shonen protagonists who is listed as an introvert, but in reality, Ichigo often needs alone time to figure things out. He doesn't really open up about his feelings often, but can be easily interpreted by his actions. Ichigo is definitely an introvert. think of how many scenes they've had with him introspecting on his bed. he spends all his free time shrugging off friends and being alone