Gradient-enhanced
J-correlation

ge-2D COSY 
ge-2D COSYDQF 
ge-2D TOCSY  
ge-2D RELAY 
ge-2D Multiple-Quantum
Gradient-enhanced
Band-selective
J-correlation

Semi-selective ge-2D COSY 
Semi-selective ge-2D TOCSY 
Semi-selective ge-2D DQ/ TQ
Miscellaneous
J-correlation

ge-2D Selective-TOCSY-COSY 
ge-2D Selective-TOCSY-J-Resolved

Gradient-enhanced
NOE-correlation

ge-2D NOESY 
ge-2D ROESY 
ge-2D EXSY

Gradient-enhanced
Band-selective
NOE correlation

Semi-selective ge-2D NOESY
Semi-selective ge-2D ROESY

Miscellaneous

ge-2D DOSY
ge-2D DOSY-TOCSY
ge-2D J-Resolved
2D STD-TOCSY
2D STD-NOESY

Also see homonuclear 2D experiments
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