Games - @playdice
Photographers - @ntopaz and https://ntopaz.com
Women of Crypto - @steemitmamas
Locations: (I'm sure there are many more)
@teammalaysia
@socalsteemit
Content Creators and Curators: (I'm sure there are many more)
@qurator
@c-squared and c-cubed
@curie
Contests - @contestkings
Universal Basic Income - @steembasicincome
Good idea for a list, @pennsif