Looking for all champ ablility hit boxes and champ model hit boxes

So the other day I was playing blitz and I landed some questionable hooks. Even I thought they didn't land. I figured it was just a lag thing. and tested this by playing a couple more games and while playing him I landed even more ridiculous hooks. so In turn I played some thresh games and noticed I could hook champs in a stupid manner by guessing the sides of (what I thought was) a champ hitbox, But what had me even more confused.. While in an Aram I played against a Zilian who was landing the dumbest of double bombs, and though they didn't actually land (meaning the inner circle of the time bomb on myself) I got stunned. So to justify why I'm looking for hit boxes is to better understand how they work and why these things happen.