Get a BBE Sonic Maximiser. It make pinched harmonics POP !!!!
Had one…..thought it was great for a while….but I got over it. 🤣
As far as generating better punch harmonics, a bit of extra gain helps. A fuzz does wonders. Billy Gibbons is one example. Eric Johnson’s violin-like lead tone (in part) is a fuzz-face and the liquid sustain it gives.