GNWL is one of them, others being PLWL, RLWL and CKWL. GNWL - This is general tatkal quota. Tickets are booked under this quota if you are booking from origin station (Or nearby) to terminating station (Or near by). ... Hence between all WL tickets GNWL has the highest chance of getting Of Tickets are Confirmed.
RQWL (RAC Provision) RQWL Request Waiting List: If a ticket is to be booked from an intermediate station to another intermediate station.