[WIP] Which adaptive stat will I gain?
Hi, I'm making a list for which adaptive stats each champion gains if they have equal amount of bonus AD and AP. Adaptive stat works by checking which you have more of at the time, and gives you that stat, but if you have equal amount of each (by starting an item without either stat, or having mix of items), it defaults to whatever champion you have. So this is a list I'm working on. It isn't a comprehensive list because I don't own all champions yet. I would appreciate your input.
#Methodology: All of these tests were done with Predator/Sudden Impact/Eyeball Collection/Relentless Hunter and Gathering Storm/Absolute Focus. I entered practice mode and checked which adaptive stat each champion received. For the champions I don't own, I added a question mark next to the stat gained. Various other side experiments were done to see how adaptive stat works. Results right below.
#Also note: For most champions, adaptive stat is intuitive and doesn't do anything crazy. Marksmen get AD, mages get AP, etc. While I can't be certain (I haven't checked all possibilities), it seems likely that adaptive stat depends solely on how much bonus AD or AP you have from items. If they're the same, it defaults to the champion's preset stat. Below are some of the factors I've checked.
Increase in base AD does not affect which adaptive stat you gain. So if you buy a 
, you will gain the default adaptive stat, which won't necessarily be AD.
Adaptive stat does not depend on how much of physical or magic damage you have dealt.
Critical Strike Chance does not affect which adaptive stat you gain.
Adaptive stat does not depend on which spells you level up.
Penetration, gold value, or number of items do not affect which adaptive stat you gain.
Temporary increase in AD or AP (
active, 
E, and 
E have been tested so far) does not affect which adaptive stat you gain.
#Champion List (WIP, last updated on 8.5 unless otherwise stated) (Ctrl+F or Cmd+F to look for the champion quickly)
Aatrox: AD? Ahri: AP? Akali: AD Alistar: AP Amumu: AP Annie: AP Ashe: AD Aurelion Sol: AP? Azir: AP? Bard: AP Blitzcrank: AD Brand: AP Braum: AD? Caitlyn: AD Camille: AD Cassiopeia: AP? Cho'Gath: AP Corki: AD Darius: AD? Diana: AP? Dr. Mundo: AD Draven: AD? Ekko: AP? Elise: AP Evelynn: AP Ezreal: AD Fiddlesticks: AP Fiora: AD? Fizz: AP? Galio: AP Gangplank: AD Garen: AD Gnar: AD? Gragas: AP Graves: AD? Hecarim: AD Heimerdinger: AP Illaoi: AD? Irelia: AD Ivern: AP? Janna: AP Jarvan IV: AD? Jax: AD Jayce: AD Jhin: AD? Jinx: AD? Kai'Sa: AD? Kalista: AD Karma: AP Karthus: AP Kassadin: AP Katarina: AP Kayle: AP Kayn: AD? Kennen: AP? Kha'Zix: AD? Kindred: AD? Kled: AD? Kog'Maw: AD? LeBlanc: AP Lee Sin: AD? Leona: AP Lissandra: AP? Lucian: AD? Lulu: AP Lux: AP Malphite: AP Maokai: AP Master Yi: AD Miss Fortune: AD Mordekaiser: AP Morgana: AP Nami: AP Nasus: AD Nautilus: AP Nidalee: AP Nocturne: AD Nunu: AP Olaf: AD Orianna: AP Ornn: AD? Pantheon: AD Poppy: AD Quinn: AD? Rakan: AP Rammus: AD Rek'Sai: AD Renekton: AD Rengar: AD Riven: AD Rumble: AP Ryze: AP Sejuani: AD Shaco: AD Shen: AD Shyvanna: AD Singed: AP Sion: AD Sivir: AD Skarner: AP? Sona: AP Soraka: AP Swain: AP Syndra: AP Tahm Kench: AD Taliyah: AP Talon: AD Taric: AP Teemo: AD Thresh: AD Tristana: AD Trundle: AD Tryndamere: AD Twisted Fate: AP Twitch: AD Udyr: AD Urgot: AD Varus: AD Vayne: AD? Veigar: AP Vel'Koz: AP Vi: AD? Viktor: AP Vladimir: AP? Volibear: AD Warwick: AD Wukong: AD? Xayah: AD Xerath: AP? Xin Zhao: AD Yasuo: AD? Yorick: AD Zac: AP? Zed: AD? Ziggs: AP Zilean: AP Zoe: AP? Zyra: AP