one thing i discovered years ago as a guitarist is that moving a finger, or adding an extra note is often dead easy and sounds cool but results in a chord with an extremely complicated name. when i know what i play on a guitar i often have to look up on a chord site to find the name of what i'm playing. one riff that sounds cool is an A minor shape slid up two frets then down again leaving the E,A and top E strings open. i'm told that's a Bm11/E. sounds good on a guitar never tried it in BIAB.

just about any chord within reason will sound good in the right place but you need real musical expertise like Matt's to know what to enter in BIAB without a lot of trial and error.