I'd like to nominate @Denmarkguy. I, myself am still a minnow, and have only used Steemit for about a month now, but every time I read a post by this user, it has clearly been crafted with care and promotes the interaction and thus inclusion of the readers.

He uses many examples from his own life to explain different psychological phenomena (see his recent post on cognitive blindness/liberating ourselves from our sufferings) that interest or baffle him, but also has lighter content like his ColorChallenge submissions.

I'd urge anyone to check out some of his writing. His tone has definitely been a calming presence for me and the pieces have undoubtedly left me more educated than I was before reading.