Word for person who loves to share knowledge

What is a word for a person who loves to share knowledge? So far I have educator in mind. Is there any other word?

Solution 1:

How about "maven"? According to the Wikipedia article,

A maven (also mavin) is a trusted expert in a particular field, who seeks to pass knowledge on to others.

[Admittedly, many dictionaries define the word merely as something like "an expert", but the meaning is in flux, and the "person who loves to share knowledge" meaning is getting more common.]

Solution 2:

A pedagogue likes to teach others things.

Solution 3:

A few more words for people who share knowledge: teacher, "teaching assistant", tutor, mentor, coach, guru, contributor, author, polyglot, blogger, Wikipedian, ...

Solution 4:

How about "pundit"? A pundit is

a person who knows a lot about a particular subject and who often talks about it in public

From: https://www.oxfordlearnersdictionaries.com/definition/english/pundit

Solution 5:

In addition to the excellent answers previously given with positive connotations, I offer this pejorative one:

pedant

...because loving to share your knowledge doesn't always mean others love to receive it.

That's not intended as a subtle dig at StackExchange users. I just really like the word.