Not too many people are making enough to 'make a living' on Steem currently. The price isn't high enough, and when money is regular enough to make a living, it detracts from the possibility of ordinary users getting a big payout.

But I would direct you to the following:
@stellabelle - made a fortune as an early Steemit writer
@anwenbaumeister
@kaylinart
@beanz (my sister, runs a podcast about Steem and related social media blockchains)
@tatianamoroz