Typically HSBC India has L8 to L3, I have never seen anyone above L3 often here.
GCB8: Assiciate/Analyst. few departments like Investment banking starts from GCB7.
GCB7: Assistant Manager/Senior Analyst
GCB6: Manager. Often, this can also be the entry level in onshore locations like UK
GCB5: Assistant Vice President
GCB4: Vice President
GCB3: Senior Vice President, usually the Department heads.
Apart from these, below are the continuoution of Global bands though not seen often in India.
GCB2: Directs of COO, CFO, CIOs of the group.
GCB1: Reportees of the CEO
GCB0: The Chief Executive.