Best Newcomer
That's a landslide for Kamikokuryou (46%), well, when you see her ranking in the general vote, that doesn't seem that surprising. The new CG members and Kasahara Momona seem to fare pretty well, although Funaki Musubu (24%) is a clear second. Tsubaki 2nd gen comes next, and then some new kenshuuseis who did a good impression on some fans, mainly Kiyono Momohime, Kawamura Ayano, and Yokoyama Reina (<- bit of an exception since she entered MM)
One more thing to note, just one vote for Hokkaidou KSS, for Kudou Yume.
Best Singer
Suzuki Airi (35%) is ahead, considered the best singer in H!P, but Oda Sakura (27%) isn't far behind. You'd expect these two to be "the main voices of H!P". But there also are good singers, whereas not necessarily considered as "the best singers in H!P", are strong singers in their respective groups. They are (were...) Takagi Sayuki (10%) and Tamura Meimi (6%). Hirose Ayaka also fits that category, but she's a bit behind, I'd think that when Kobushi will have more recognition, the general H!P will recognize her singing talent more.
Best Dancer
Well, the same pattern repeats. Inaba Manaka (40%) is (was) considered the best dancer in H!P, but Ishida Ayumi (28%) isn't that far behind, while Nakajima Saki (13%) and Sasaki Rikako (5%) are considered good dancers in their respective groups, but not generally the members who come in mind when you think "best dancer in H!P".
Best Performer
I don't know how you reacted to that category, but I personally didn't understand it. What is a good performer? Someone who can sing and dance? Someone with an aura? I think everyone can define it differently, and in fact, I've seen a lot of people voting here for their +10 member. To say it clearly, yeah, I don't think that's a good category. I believe that the optional categories were inspired by the Japanese awards (for the newcomer) and by the Kenshuusei Happyoukai (for the singer/dancer/performer one). While in the Kenshuusei format, the "Best Performance" makes sense because it's a different vote from the other two (the audience votes, don't they?), I don't see here what it means.
What makes me say that is that, well, we have about the same members ahead as the general ranking. So that means that either for H!O fans, the best idol is the best performer, or people don't seem to understand what this means and just put their favourite member. In the first case, there's a redundant category, in the second case, that's closer to the "oshi" vote from the Japanese fans, but then the name should be changed.