Yes, I noticed some similarities to the characters too! But for me it was more that Jared was Edward and Ian was Jacob. I think it has a lot to do with the fact that I'm Team Jacob but I think that if Bella hadn't gotten pregnant and Jacob imprinted on Renesmee, I think he still would've loved her the same he did when she was a human.
My favorite character is Ian and even if he weren't Irish - I have a huge obsession with anything Irish, especially men & accent - I'd still think he's the best character Stephenie's ever created. He truly did love Wanderer herself and not just Mel's body and he proved it in so many ways.
My 2nd favorite character was Wanda, obviously. At first I was really annoyed with her being so self-sacrificing and not hurting anyone physically or mentally but then I started to understand the reasons for that and started liking her.
Part of me liked Jared and Melanie, too, Mel though a bit more than Jared. Jamie of course I liked, too, but I think Stephenie made him sound so much younger than he really was. I remember he was 13 when Wanda/Mel got into the cave..? Jeb and Kyle I liked very much, too, although Kyle was mean for a long time but when he softened I really liked him, especially scenes with both him and Ian. They were awesome together! And Doc for being so caring
Somewhere in the near future you will be looking my signature instead of this message.