I really like your niche choices. I would include arts and craft as one of my favorite niches as well, but I would say business, branding and marketing are my strongest niches as i enjoy writing about them and educating people.

One more thing, have you seen the recent initiative by project hope community?, I think it is an amazing initiative... You can check it out, maybe you might consider the initiative valuable. Here is the post https://steemit.com/hive-175254/@project.hope/why-you-should-consider-supporting-project-hope-with-delegation-100-dividents-payout