Great topic,
@Wonky Oracle !!!!
It's hard to type fictitious people.

I see a trend with those who type famous people and fictitious characters where their types wobble between INFJ and ENFJ. I think this is because a lot of people don't understand INFJs and believe we always behave in a stereotypical introverted manner (reserved, hiding in the shadows, quiet) when we do have a social and vocal side.
For example, and to stay on your topic, I've seen Elizabeth Bennet of "Pride and Prejudice" by Jane Austen categorized as both INFJ and ENFJ. I prefer to cast her as an INFJ. This may be bias. My husband is INTJ and I've seen Darcy typed as INTJ, so when I read a suggestion that Elisabeth was INFJ and Darcy INTJ it explained why I am so hooked on that story, despite thinking it gives women impossible expectations.
To me, Elisabeth seems like more of a social introvert than, say, her younger sisters who are clearly written as extroverts. She is bookish and likes time alone, but is not as introverted as her older sister Jane.
Other possibilities:
Remus Lupin of the "Harry Potter" series by JK Rowling (- who is an INFJ)
Atticus Finch of "To Kill A Mockingbird" by Harper Lee
Charles Xavier of the X-men
Yoda, possibly Obi Wan Kenobi of "Star Wars" -- these would both be stereotypes of INFJs.
I'm also curious about how INFJ writers develop protagonists (and antagonists) of other types. It seems that our famous empathy, "I understand," plays a key role.