I agree that Kaitlyn does the spear well. I was shocked the first time I saw it. Obviously not as vicious as Rhino or Goldberg's spears but it's definitely credible.
When it comes to who does the best spear, I think Roman Reigns at the moment does a very nice one, but I won't say it's the best yet. Personally, it's very, and I mean VERY, close between Rhino and Goldberg for me. I mean, Goldberg has the edge on stiffness, but Rhino kinda did his Gore differently. It was more of a striking spear compared to Goldberg's where he would reach around him more, allowing Rhino's opponent to do a creative sell with it. Also, I'm just gonna go straight ahead and say that I like Rhino as a wrestler way more than Goldberg, but I'm just saying that so it won't be hard to pick Rhino, lol. It's really close though, for me at least. I wouldn't say I'm completely sure about that.