Wing shape is close to F-16 XL.
It is called cranked arrow delta wing.
Some other comparisons added.
Frontal area is 16.5 % smaller than on a Folland Gnat that went supersonic in a dive ( level mach 0.98 ).
It has more than half less frontal with Me-109 and Bell X-1 ( that went mach 2.25 in 27 km ).