Hello Slaanesh =)
I have much the same issue as you. I'm a 25 year-old guy and attracted to boys primarily ages 12-18, though it depends on how attractive I find the person. I regard myself as a hebephile since I prefer younger teenagers. I may have some thoughts of age regression as well, since I like to imagine myself being younger than I am and I feel my mindset is more like a teenager and not so much young adult (though it doesn't cause me to be irresponsible by any means, it's more of an emotional/sexual thing).
The first thing that strikes me is that you started trying to label yourself from the age of 11, and now you're 15 and it seems that perhaps as you're getting older, so are the objects of your attraction? That's what it seems like anyway, and since you're still a teenager yourself, I don't think I would label you a hebephile either since hebephiles typically would prefer someone ages 12-15. If that's the case, I don't see anything odd or alarming about your attractions since you're in the same basic age group.
As far as your question about different "types" of pedophile, I'm not quite sure what you mean, but the proper terms for minor-attracted people are as follows:
Pedophile = attracted to anyone under the age of puberty
Hebephile = attracted to younger adolescents who have just started or are in puberty
Ephebophile = attracted to older adolescents
Some are exclusively attracted to those age groups and some are not. If you're the latter, it's much easier to function in society and live a more fulfilled life, but the tricky thing about taboo attractions is that the more time you spend fantasizing and desiring that, the more it becomes likely that you shut out members of your own age group because you could stop being attracted to them, and that's dangerous because you could eventually cause yourself to become exclusively attracted to the bad thing.
As for reasons for pedophilia or any of those other ones, there really isn't any set reason for why some people prefer younger ages. Of course there are various triggers that could set it off, but all of them would require that there was already some sort of underlying attraction. That's what I believe, at least.
The first time I noticed I was attracted to younger boys, I was 13. Mind you though, it never occurred to me that I was around the same age as them anyway, because I was in Boy Scouts and some new kids had come in who were about 11-12 years old, and although that's not much of an age difference, it was really noticeable to me because my friends and I were a bit further along in our sexual development. Also, I was a bit more mentally mature and my friends were a year or two older than me, so I was pretty freaked out that I was attracted to these kids when in fact it may not have been too far out of the ordinary.
It seems odd and probably looks odd, but that's something I believe that really sucks for teenagers is that puberty and sexual development is different for everyone, because I've seen so many on here who think they're pedophiles when in fact they're really in the same general age group. It's just that they started growing up really fast and so when you look at a kid who's a year or two younger and not so far into puberty yet, you start going crazy.
As far as different types of pedophiles though, I don't believe that most of them want to or are prone to hurting children or carrying out their fantasies. It depends a lot on mental state of course and how emotionally healthy you are, but the vast majority? I don't think they really want to hurt anyone. I sure don't.
And it's the caring and emotion you feel when you look at kids that makes you a person of good character. Those protective instincts are important, and It's what can stop you from harming anyone.
The truth is that when they look scared or upset I want to hug and protect them and when they smile and seem happy or playful I want to bed them.
I understand what you mean here, and there are times I feel the same way. I think what helps me though is seeing the humanity in people, because I strive on a daily basis to make everyone happy. Seeing other people happy makes me happy, and this is also another reason (besides my own issues) that I come to this forum. Sometimes it feels like the blind leading the blind haha, but really I do my best to answer questions and help out where I can. That's at least one way to give back to the human race to make up for my sexual attractions.
As far as non-offending pedophiles vs. offending, again it's all about mindset.
I think my own particular issue is that sometimes I have the emotional attraction and sometimes not, meaning there are times I can be emotionally and sexually attracted to teenagers, and other times I find them horribly annoying while still being sexually attracted to them =/ it's confusing, but it depends on how mature they are. If I think they seem mentally mature (as in not being a public nuisance), that's more emotionally and sexually appealing to me.
I think a lot of it gets misconstrued as well. For example, children are naturally happy and curious beings, and they can teach you the meaning of joy. But it's all in how people take it. If they have a sexual attraction to younger people, even a smile could be seen as sexually stimulating.
For me, I like the teens who stand out. The ones who are more mature than their friends, who've experienced life in good parts and bad and who I could have a rational conversation with, the ones with issues at home or whatever else. I generally like helping people, though I think that's where I've gone wrong before, because if I'm attracted to someone I'm helping, it could only make things worse. Those situations when I was around 20 or so and trying to help a couple guys who were 15 really bothered me because I knew I had to be a better example. In a couple instances where the attraction was actually mutual, it was more of an emotional thing for me, but sexual for them. They didn't want relationships, and even among members of my own age group whom I've had relations with, it always seemed to be that way anyway.
Life isn't easy being gay in general =p
But I think the whole emotional/sexual thing can be confusing. You want to protect people, help them, do the best you can and at the same time, you have to battle the sexual issues. It's really not an easy thing, but I guess you have to teach yourself patience and if you have any attractions to people of your own age group, I'd say to try and refocus thoughts on that as much as you can because as I said before, the longer you spend desiring what you can't have, the more it eats away at you and screws up your life.
Hope this helps somewhat =)
And again, if you're 15...I wouldn't go labeling yourself as a pedophile or hebephile yet, you still have a few years to go.
If you love a flower, don't pick it up. Because if you pick it up, it dies, and it ceases to be what you love. So if you love a flower, let it be. Love is not about possession. Love is about appreciation. - Osho