Here's the chord technique that Noel Gallagher built his career on - keeping the third and little finger down as anchors while changing the other fingers. These create sophisticated sounds with surprisingly simple changes.
E minor 7, A7sus4, and Dsus4 formations using the anchor finger technique
How keeping fingers down makes "confusing-named" chords easier than basic open chords
Thumb-over-top muting for clean sound with overdrive
Why these chords work so well together (they're all in G major/E minor)
Applications in "Wonderwall," "Wish You Were Here," and Neil Young songs
You'll find that the more complicated the chord name sounds, the easier the change usually is. That's because we're using anchor fingers instead of moving all our fingers every time. This technique appears across all genres - not just Oasis songs - and gives you access to more sophisticated harmonic colours.