I don't know those people beyond the names, but some celebrities of my world are already here. These are social media and you tube types like @jerrybanfield and @dollarvigilante who I already followed out there in the big internet.

Them being here on steemit was the direct reason I decided to try. Amazingly, now I can talk to them directly here after years of just being a fan in multiple other places.

The more celebrities from more fields - the better. For me in the health care and fitness niche, that would be some of the celebrity trainers and alt-health folks. Tracy Anderson and Food Babe come to mind in that category. I follow them out there and I would surely follow them here.

For thought leaders - Seth Godin would be a huge catch. Him and his 200 word motivational posts could really do well here. Also Jeff Bullas would be awesome and bring more credibility. :)