This may be opinion based- as it seems like Kayle can be played a number of viable ways: AD(Carry, sort of), AP, and On-Hit/Hybrid
Which is the most common/best focus for a Mid Kayle? I want to learn a new Mid that is not a traditional AP Carry, as I am getting into Ranked games where Kha'Zix is banned or taken- due to just being an overall strong pick. I don't really like the AP Caster playstyle- and have heard that Kayle is a viable pick in this slot.
kayle is a strong enough hero that you can go an attack speed build and still do just fine with her
nashors tooth into straight ap is still the best build on her though --- I hated going to weddings. All the grandmas would poke me saying "You're next." They stopped that when I started doing it to them at funerals.