Spencer does a pretty good job of baffling readers. In one issue people think it's OMD Peter, in another it seems that Kindred is Harry... and then, Gwen is primary suspect.
Thee guy does it on purpose, and he's really good at it. I wonder if he is sitting here with us on the forum and reading our posts with amusement. If so - great job! Spider-Man has not been so good for a long time in both Peter Parker's actions and conflicts.
Going back to Kindred's identity, I don't think it's Gwen or Harry, and the panel with Peter's dying friend is red herring. It's the same case with references to Gwen in # 49 / # 850. Spencer played well with GG and Spider-Gwen's dialogue, etc. And he tries to confuse us.
Moreover, after this issue, I really believe that Kindred is OMD Peter. Our Centidemon just enters the monologue and thoughts of Spider-Man, he is the narrator in the comic book in which the protagonist is Peter - for me, that's an important clue.
There's also Kindred's way of being, his dark sense of humor, and rather a laid-back personality. It seems as if he was a Parker reflection from a crooked mirror.
I believe that Spencer is giving us subtle hints. Kindred sticks to the walls, just like Spidey. He uses a centipede (opponents of spiders - the opposite of a spider, just as Kindred is the opposite of Parker). Kindred cares about Mary Jane - like Peter. Norman saw his legacy in him - a strong theme of #850.
These are the delicate hits that Kindred is Peter in some form ... after all, Peter Parker's biggest opponent is often himself ... here, literally.
Oh, and one more thing that doesn't appeal to me with theories that Kindred is Gwen.
Clone Conspiracy. If Kindred is Gwen, then Slott's story makes no sense. Spencer himself confirmed that the clones have original souls - so Gwen's clone from CC is the real deal. Why would Spencer contradict himself?
Harry still seems like he might be Kindred, but as I mentioned earlier - it's probably a red herring.
Phew. Writing this was kinda exhausting