Sorry, I thought we were discussing approaches rather than actual fingerings - my bad.
Here are some basics from my approach...
1: learn to combine forward and rear extension with shifts in one smooth motion. For example, develop the ability to forward extend a m3, m6 or b9 between index and ring (or middle and pinky,) at the same time releasing the thumb and allowing the entire hand to glide up, closing the extension and moving up position;
2: Try to approach 4ths without relying on the barre, using various finger sequences to facilitate smooth shifts, allowing the thumb to reposition during the sequence rather than as a discrete step;
3: 1 and 2 in combination!
4: On a fretted instrument, try to target the fret crown to minimise movement and fingering pressure;
5: Keep the non-active fingertips as close to the strings as possible, again to minimise movement;
6: Try to develop an awareness of synchronisation between left and right hands, aiming to stop/finger and pluck at the precise same moment;
As always, YMMV...