I think the page is coming along well, but I find myself debating which type of abilities should go on there. I think definite ones are:
Abilities that choose at least one but not all targets in an aoe based on
AoE abilities that cannot be cast without valid targets
The ambiguous ones are abilities that affect all champions globally (as they can be argued as AoEs having global range; Destiny/Requiem/Wish), abilities that affect all champions if they stay within range of an anchor (delayed AoE; Chain of Corruption/Soul Shackles), and uncontrollable pets, since I think their AI will always prioritize attacking your autoattack targets (and units with Malefic Visions in Malzahar's case).