Chord patterns.

Hi folks.

Is there such a thing as midi chord patterns I can download or use for ableton?

Lets say I wanna realistic piano, i know the chords, but its the pattern, and rhythm that I struggle making realistic, I don't want to do this on a midi keyboard. I am looking for ....pattern templates, or preset layouts for how chords are played naturally on a piano, is there anything like this out there?