I'm very influenced by what I read. I don't intentionally try to emulate other writers' style, but you can see their influence in my writing and the way it's changed from story to story over the years.
When I first started writing fanfic, I was fresh out of middle school and loved Lurlene McDaniel, queen of the tween terminal illness tearjerkers, and you can see her influence in almost every fanfic I wrote that first year or two.
Broken was a transitional story for me, style-wise, and that one, at least the first half, was influenced by what I was reading that semester of high school - classic literature for my AP English class, Harry Potter, and Swollen Issues. The classic literature spawned my awkward attempts at including symbolism, as well as my dream interpretation phase. Although I'm embarrassed to admit this for fear of insulting J.K. Rowling, I can see the influence of her style in the early chapters of Broken, which use a lot of parentheses with lines of dialogue or added information, something I'd never used before and don't really use anymore, although JKR pulls it off much better! And Swollen Issues inspired the plot and possibly also a lot of the over-the-top angst and melodrama, although maybe that was just me being a melodramatic teenager. The fanfic Cover Me With Dreams was a huge source of inspiration for the sequel BMS, which was my first attempt at a "grown up" romance.
When I started Secrets of the Heart, I'd been on a Stephen King kick - I think I'd started rereading 'Salem's Lot - and you can see the influence in the beginning of that story by how descriptive it is, especially with locations and stuff, which I'd never been so into describing before.
I don't remember what I was reading when I started Curtain Call, but I'm thinking it had to be something in first person (probably Jodi Picoult) because even though I hardly ever write novels in first person, that one always felt like a first person story to me. I find that when I've been reading a lot of first person stuff, I start thinking in first person when I go to write, and sometimes it's hard to transition back into the third. The opposite is also true - when I've been reading something that's written in third person and really flowery and descriptive, it's hard to write well in first.
As far as being compared to other writers... I think there's a group of us who like to write the same genre that I could see being compared to one another, but otherwise, I haven't really been compared to anyone that I can remember.