Come on Bill, your asking one of those un-answerable questions!
Every track, corner & situation is different. How much curb to take, track temp, tyre temp, car capability etc.
In general as JP would say Seat time & more seat time. You need to really know your packages capabilities inside out.
The pro's technique of early braking has payoff's in a longer sprint race or endurance environment. Where conservation of equipment is beneficial. Braking earlier means your not braking as hard, not wearing out pads, not upsetting the car, as much as harder braking.
In AX I tend to accelerate up to a early braking point, hit the brakes at maybe 60-70% effort then transition off the brakes smoothly before turn-in.
On turn-in i'm coasting through till slightly before Orat apex where i feed in the throttle.
IMO thats standard cornering technique.
Alternatively you can brake later & harder. Come off brakes at turn-in. Just be carefull of the weight transfer.
Or brake even later & simultaniously turn-in while backing off brakes. Requires left foot braking & goot car control.
The only time's i've heard of pre-braking is in 2 cases. (A) pre-brake on long straights to verify to driver that brake pedal is still there. Required with floating rotor design as pistons can back into caliper, meaning a really big scare to driver when entering the next turn. (
Entering a flat out corner a dab of brake helps settle the springs for the turn.
Sorry Bill thats probably as clear as mud.