Of what you have>The Dark Knight Returns
This is the (non-canon) ending for pre-crisis Batman. Year One is the beginning of post-crisis Batman. I’d recommend reading it first, just know it doesn’t tie into the other comics very much. It’s an incredible comic and mandatory reading for any Batman fan>Year One>The Long Halloween>A Death In The Family>The Killing Joke>Hush>Under The Red Hood>The Court Of Owls>The Batman Who Laughs>Batman/TMNT
For comics you’re missing, I’d recommend reading Grant Morrison’s run + Arkham Asylum: A Serious House On Serious Earth. Arkham Asylum you can read basically anywhere chronologically (it’s a standalone story that doesn’t tie into the main continuity). Grant Morrison’s run goes after Red Hood and before the Court of Owls.
You’re also missing Knightfall and No Man’s Land. Knightfall goes after the Killing Joke, No Man’s Land goes after Knightfall, before Hush
After the Long Halloween, I’d recommend Dark Victory, then Robin Year One