I would say
@chbartist He is an artist in steemit and having 15409 followers as on date. He puts quality content in the platform through meaningful and motivational articles. Since his very good so you can see good number of user engagement with all his posts. I am following him since last 6 months and he never posted anything which is not useful and knowledgeable.
He recently started his youtube channel but this is initial stage.
https://www.youtube.com/channel/UCx8u2eAuBvyAnRlKzmsZgtw
So in all his posts you can see hard work to draft the amazing content. This is a prominent account in steemit.
Second-
@moneyguruu He is the one who joined steemit 1 year back and have over 4.5 followers here but not active in steemit since last 9 month.
He is very active in Youtube Channel and have 356k subscribers. He shares the update about cryptocurrencies in his YTchannel.