Attack on Titan Titan shifter titans

Hi, I just wanted to write this so that if i'm getting to my attack on titan fanfiction and I need to include a titan in there, that I would be able to get information right about it. This will also contain major spoilers from the manga. You have been warned. Feel free to comment if I miss something. I'm also going to do a few OC titans as well so some of them will not be canon.